diff --git a/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perchannel_impl.cu b/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perchannel_impl.cu
index 75c5eacb25bb46e45f5275b0f901dd1ece49c31d..0e762b7dc405f72204cff663b8855ebd84e20062 100644
--- a/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perchannel_impl.cu
+++ b/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perchannel_impl.cu
@@ -20,7 +20,6 @@
 #include <thrust/reduce.h>
 #include <thrust/pair.h>
 #include "fake_quant_perchannel_impl.cuh"
-#include "device/gpu/cuda_common.h"
 
 /**
  * Find the nudge min, max and scale value as output.
@@ -34,13 +33,17 @@
  * @param channel_num
  * @return
  */
-__global__ void NudgeMinMaxPerChannel(const float *input_min, const float *input_max, const float quant_min,
-                                      const float quant_max, float *nudge_min, float *nudge_max, float *scale,
-                                      int channel_num) {
+__global__ void NudgeMinMaxPerChannel(float *input_min, float *input_max, const float quant_min, const float quant_max,
+                                      float *nudge_min, float *nudge_max, float *scale, int channel_num,
+                                      const bool symmetric) {
   float zp_from_min = 0.f;
   float nudge_zp = 0.f;
 
   for (int i = blockIdx.x * blockDim.x + threadIdx.x; i < channel_num; i += blockDim.x * gridDim.x) {
+    if (symmetric) {
+      input_max[i] = abs(input_min[0]) < input_max[i] ? input_max[i] : -input_min[i];
+      input_min[i] = abs(input_min[i]) < input_max[i] ? -input_max[i] : input_min[i];
+    }
     if ((quant_max - quant_min) == 0 || (input_max[i] - input_min[i]) == 0) {
       scale[i] = 0.f;
       zp_from_min = 0.f;
@@ -62,11 +65,11 @@ __global__ void NudgeMinMaxPerChannel(const float *input_min, const float *input
   }
 }
 
-void CalNudgePerChannel(const float *input_min, const float *input_max, const float quant_min, const float quant_max,
-                        float *nudge_min, float *nudge_max, float *scale, const int channel_num,
+void CalNudgePerChannel(float *input_min, float *input_max, const float quant_min, const float quant_max,
+                        float *nudge_min, float *nudge_max, float *scale, const int channel_num, const bool symmetric,
                         cudaStream_t cuda_stream) {
   NudgeMinMaxPerChannel<<<GET_BLOCKS(channel_num), GET_THREADS, 0, cuda_stream>>>(
-    input_min, input_max, quant_min, quant_max, nudge_min, nudge_max, scale, channel_num);
+    input_min, input_max, quant_min, quant_max, nudge_min, nudge_max, scale, channel_num, symmetric);
 }
 
 /**
@@ -80,9 +83,8 @@ void CalNudgePerChannel(const float *input_min, const float *input_max, const fl
  * @param scale - array
  * @return
  */
-__global__ void FakeQuantizePerChannel(const float *input, float *output, const int total_size, const int channel_size,
-                                       const float *nudge_min, const float *nudge_max, const float *scale,
-                                       bool symmetric) {
+__global__ void FakeQuantPerChannel(const float *input, float *output, const int total_size, const int channel_size,
+                                    const float *nudge_min, const float *nudge_max, const float *scale) {
   float input_x = 0.f;
   int nudge_input = 0;
   int channel_idx = 0;
@@ -106,16 +108,15 @@ __global__ void FakeQuantizePerChannel(const float *input, float *output, const
   }
 }
 
-void CalFakeQuantizePerChannel(const float *input, float *output, const int total_size, const int channel_size,
-                               const float *nudge_min, const float *nudge_max, const float *scale, bool symmetric,
-                               cudaStream_t cuda_stream) {
-  FakeQuantizePerChannel<<<GET_BLOCKS(total_size), GET_THREADS, 0, cuda_stream>>>(
-    input, output, total_size, channel_size, nudge_min, nudge_max, scale, symmetric);
+void CalFakeQuantPerChannel(const float *input, float *output, const int total_size, const int channel_size,
+                            const float *nudge_min, const float *nudge_max, const float *scale,
+                            cudaStream_t cuda_stream) {
+  FakeQuantPerChannel<<<GET_BLOCKS(total_size), GET_THREADS, 0, cuda_stream>>>(input, output, total_size, channel_size,
+                                                                               nudge_min, nudge_max, scale);
 }
 
-__global__ void FakeQuantizePerChannelGrad(const float *input, const float *gradient, float *output,
-                                           const int total_size, const int channel_size, const float *nudge_min,
-                                           const float *nudge_max) {
+__global__ void FakeQuantPerChannelGrad(const float *input, const float *gradient, float *output, const int total_size,
+                                        const int channel_size, const float *nudge_min, const float *nudge_max) {
   int channel_idx = 0;
   int per_channel_num = total_size / channel_size;
 
@@ -129,9 +130,9 @@ __global__ void FakeQuantizePerChannelGrad(const float *input, const float *grad
   }
 }
 
-void CalFakeQuantizePerChannelGrad(const float *input, const float *gradient, float *output, const int total_num,
-                                   const int channel_num, const float *nudge_min, const float *nudge_max,
-                                   cudaStream_t cuda_stream) {
-  FakeQuantizePerChannelGrad<<<GET_BLOCKS(channel_num), GET_THREADS, 0, cuda_stream>>>(
-    input, gradient, output, total_num, channel_num, nudge_min, nudge_max);
+void CalFakeQuantPerChannelGrad(const float *input, const float *gradient, float *output, const int total_num,
+                                const int channel_num, const float *nudge_min, const float *nudge_max,
+                                cudaStream_t cuda_stream) {
+  FakeQuantPerChannelGrad<<<GET_BLOCKS(channel_num), GET_THREADS, 0, cuda_stream>>>(input, gradient, output, total_num,
+                                                                                    channel_num, nudge_min, nudge_max);
 }
diff --git a/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perchannel_impl.cuh b/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perchannel_impl.cuh
index 3dff7156a7725533414bf611e4986c97a4e95d90..ad2e387b082f74c57e6f59280e8648db6fdab1dd 100644
--- a/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perchannel_impl.cuh
+++ b/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perchannel_impl.cuh
@@ -14,22 +14,21 @@
  * limitations under the License.
  */
 
-#ifndef MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMP_FAKEQUANTIZE_H_
-#define MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMP_FAKEQUANTIZE_H_
+#ifndef MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMP_FAKE_QUANT_PERCHANNEL_H_
+#define MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMP_FAKE_QUANT_PERCHANNEL_H_
 
-void CalNudgePerChannel(const float* input_min, const float* input_max, const float quant_min, const float quant_max,
-                        float* nudge_min, float* nudge_max, float* scale, const int channel_num,
-                        cudaStream_t cuda_stream);
+#include "device/gpu/cuda_common.h"
 
-void CalFakeQuantizePerChannel(const float* input, float* output, const int total_num, const int channel_num,
-                               const float* nudge_min, const float* nudge_max, const float* scale, bool symmetric,
-                               cudaStream_t cuda_stream);
+void CalNudgePerChannel(float *input_min, float *input_max, const float quant_min, const float quant_max,
+                        float *nudge_min, float *nudge_max, float *scale, const int channel_num, const bool symmetric,
+                        cudaStream_t cuda_stream);
 
-void CalMinMaxPerChannel(float* input, float* input_min, float* input_max, const int total_num, const int channel_num,
-                         const float ema_decay, const bool ema, cudaStream_t cuda_stream);
+void CalFakeQuantPerChannel(const float *input, float *output, const int total_num, const int channel_num,
+                            const float *nudge_min, const float *nudge_max, const float *scale,
+                            cudaStream_t cuda_stream);
 
-void CalFakeQuantizePerChannelGrad(const float* input, const float* gradient, float* output, const int total_num,
-                                   const int channel_num, const float* nudge_min, const float* nudge_max,
-                                   cudaStream_t cuda_stream);
+void CalFakeQuantPerChannelGrad(const float *input, const float *gradient, float *output, const int total_num,
+                                const int channel_num, const float *nudge_min, const float *nudge_max,
+                                cudaStream_t cuda_stream);
 
-#endif  // MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMP_FAKEQUANTIZE_H_
+#endif  // MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMP_FAKE_QUANT_PERCHANNEL_H_
diff --git a/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perlayer_impl.cu b/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perlayer_impl.cu
index 11a25ba2947a365605c931ae205de3147aa76688..f527d33df959313cd01f24eedaf448371c0bbeeb 100644
--- a/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perlayer_impl.cu
+++ b/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perlayer_impl.cu
@@ -17,11 +17,10 @@
 #include <thrust/extrema.h>
 #include <thrust/device_vector.h>
 #include <thrust/pair.h>
-#include "device/gpu/cuda_common.h"
 #include "fake_quant_perlayer_impl.cuh"
 
-__global__ void FakeQuantize(const float *input, float *output, const int size, const float *nudge_min,
-                             const float *nudge_max, const float *scale) {
+__global__ void FakeQuantPerLayer(const float *input, float *output, const int size, const float *nudge_min,
+                                  const float *nudge_max, const float *scale) {
   float input_x = 0.f;
   int nudge_input = 0;
 
@@ -43,8 +42,8 @@ __global__ void FakeQuantize(const float *input, float *output, const int size,
   return;
 }
 
-__global__ void FakeQuantizeGrad(const float *input, const float *gradient, float *output, const int size,
-                                 const float *nudge_min, const float *nudge_max) {
+__global__ void FakeQuantPerLayerGrad(const float *input, const float *gradient, float *output, const int size,
+                                      const float *nudge_min, const float *nudge_max) {
   for (int i = blockIdx.x * blockDim.x + threadIdx.x; i < size; i += blockDim.x * gridDim.x) {
     if (input[i] < nudge_min[0] || input[i] > nudge_max[0]) {
       output[i] = 0;
@@ -55,12 +54,18 @@ __global__ void FakeQuantizeGrad(const float *input, const float *gradient, floa
   return;
 }
 
-__global__ void NudgeMinMax(const float *input_min, const float *input_max, const float quant_min,
-                            const float quant_max, float *nudge_min, float *nudge_max, float *scale) {
+__global__ void NudgeMinMaxPerLayer(float *input_min, float *input_max, const float quant_min, const float quant_max,
+                                    float *nudge_min, float *nudge_max, float *scale, const bool symmetric) {
   float zp_from_min = 0.f;
   scale[0] = 0.f;
   nudge_max[0] = 0.f;
   nudge_min[0] = 0.f;
+
+  if (symmetric) {
+    input_max[0] = abs(input_min[0]) < input_max[0] ? input_max[0] : -input_min[0];
+    input_min[0] = abs(input_min[0]) < input_max[0] ? -input_max[0] : input_min[0];
+  }
+
   if ((quant_max - quant_min) == 0 || (input_max[0] - input_min[0]) == 0) {
     scale[0] = 0.f;
     zp_from_min = 0.f;
@@ -83,53 +88,24 @@ __global__ void NudgeMinMax(const float *input_min, const float *input_max, cons
   return;
 }
 
-__global__ void UpdateInputMinMaxWithEMA(float *input_min, float *input_max, const float min, const float max,
-                                         const float decay) {
-  input_min[0] = decay * (min) + (1 - decay) * (input_min[0]);
-  input_min[0] = input_min[0] > 0 ? 0 : input_min[0];
-  input_max[0] = decay * (max) + (1 - decay) * (input_max[0]);
-  input_max[0] = input_max[0] < 0 ? 0 : input_max[0];
-  return;
-}
-
-__global__ void UpdateInputMinMax(float *input_min, float *input_max, const float min, const float max) {
-  input_min[0] = min > 0 ? 0 : min;
-  input_max[0] = max < 0 ? 0 : max;
-}
-
-void CalFakeQuantize(const float *input, float *output, const int size, const float *nudge_min, const float *nudge_max,
-                     const float *scale, bool symmetric, cudaStream_t cuda_stream) {
-  FakeQuantize<<<GET_BLOCKS(size), GET_THREADS, 0, cuda_stream>>>(input, output, size, nudge_min, nudge_max, scale);
-  return;
-}
-
-void CalFakeQuantizeGrad(const float *input, const float *gradient, float *output, const int size,
-                         const float *nudge_min, const float *nudge_max, cudaStream_t cuda_stream) {
-  FakeQuantizeGrad<<<GET_BLOCKS(size), GET_THREADS, 0, cuda_stream>>>(input, gradient, output, size, nudge_min,
-                                                                      nudge_max);
+void CalFakeQuantPerLayer(const float *input, float *output, const int size, const float *nudge_min,
+                          const float *nudge_max, const float *scale, cudaStream_t cuda_stream) {
+  FakeQuantPerLayer<<<GET_BLOCKS(size), GET_THREADS, 0, cuda_stream>>>(input, output, size, nudge_min, nudge_max,
+                                                                       scale);
   return;
 }
 
-void CalNudge(const float *input_min, const float *input_max, const float quant_min, const float quant_max,
-              float *nudge_min, float *nudge_max, float *scale, cudaStream_t cuda_stream) {
-  NudgeMinMax<<<1, 1, 0, cuda_stream>>>(input_min, input_max, quant_min, quant_max, nudge_min, nudge_max, scale);
+void CalFakeQuantPerLayerGrad(const float *input, const float *gradient, float *output, const int size,
+                              const float *nudge_min, const float *nudge_max, cudaStream_t cuda_stream) {
+  FakeQuantPerLayerGrad<<<GET_BLOCKS(size), GET_THREADS, 0, cuda_stream>>>(input, gradient, output, size, nudge_min,
+                                                                           nudge_max);
   return;
 }
 
-void CalMinMax(float *input, float *input_min, float *input_max, const int size, const float ema_decay, const bool ema,
-               cudaStream_t cuda_stream) {
-  float minel = 0.f;
-  float maxel = 0.f;
-  auto policy = thrust::cuda::par.on(cuda_stream);
-  thrust::pair<thrust::device_ptr<float>, thrust::device_ptr<float>> tuple;
-  tuple = thrust::minmax_element(policy, thrust::device_pointer_cast(input), thrust::device_pointer_cast(input) + size);
-  minel = tuple.first[0];
-  maxel = tuple.second[0];
-
-  if (ema) {
-    UpdateInputMinMaxWithEMA<<<1, 1, 0, cuda_stream>>>(input_min, input_max, minel, maxel, ema_decay);
-  } else {
-    UpdateInputMinMax<<<1, 1, 0, cuda_stream>>>(input_min, input_max, minel, maxel);
-  }
+void CalNudgePerLayer(float *input_min, float *input_max, const float quant_min, const float quant_max,
+                      float *nudge_min, float *nudge_max, float *scale, const bool symmetric,
+                      cudaStream_t cuda_stream) {
+  NudgeMinMaxPerLayer<<<1, 1, 0, cuda_stream>>>(input_min, input_max, quant_min, quant_max, nudge_min, nudge_max, scale,
+                                                symmetric);
   return;
 }
diff --git a/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perlayer_impl.cuh b/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perlayer_impl.cuh
index 27c39dead1b8831a5ae21989e2a42ddec7d1173e..dda95ed781f56b79e6f0116f2fcc82700e09e144 100644
--- a/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perlayer_impl.cuh
+++ b/mindspore/ccsrc/kernel/gpu/cuda_impl/fake_quant_perlayer_impl.cuh
@@ -14,19 +14,18 @@
  * limitations under the License.
  */
 
-#ifndef MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMP_FAKEQUANTIZE_H_
-#define MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMP_FAKEQUANTIZE_H_
+#ifndef MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMP_FAKE_QUANT_PERLAYER_H_
+#define MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMP_FAKE_QUANT_PERLAYER_H_
 
-void CalFakeQuantize(const float *input, float *output, const int size, const float *nudge_min, const float *nudge_max,
-                     const float *scale, bool symmetric, cudaStream_t cuda_stream);
+#include "device/gpu/cuda_common.h"
 
-void CalFakeQuantizeGrad(const float *input, const float *gradient, float *output, const int size,
-                         const float *nudge_min, const float *nudge_max, cudaStream_t cuda_stream);
+void CalNudgePerLayer(float *input_min, float *input_max, const float quant_min, const float quant_max,
+                      float *nudge_min, float *nudge_max, float *scale, const bool symmetric, cudaStream_t cuda_stream);
 
-void CalNudge(const float *input_min, const float *input_max, const float quant_min, const float quant_max,
-              float *nudge_min, float *nudge_max, float *scale, cudaStream_t cuda_stream);
+void CalFakeQuantPerLayer(const float *input, float *output, const int size, const float *nudge_min,
+                          const float *nudge_max, const float *scale, cudaStream_t cuda_stream);
 
-void CalMinMax(float *input, float *input_min, float *input_max, const int size, const float ema_decay, const bool ema,
-               cudaStream_t cuda_stream);
+void CalFakeQuantPerLayerGrad(const float *input, const float *gradient, float *output, const int size,
+                              const float *nudge_min, const float *nudge_max, cudaStream_t cuda_stream);
 
-#endif  // MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMP_FAKEQUANTIZE_H_
+#endif  // MINDSPORE_CCSRC_KERNEL_GPU_CUDA_IMP_FAKE_QUANT_PERLAYER_H_
diff --git a/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perchannel_gpu_kernel.cc b/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perchannel_gpu_kernel.cc
index ffed550fbbc74cbec50c711853554c706166060f..8db6ddd84877690d5f41e61e3ad61a7fe221b741 100644
--- a/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perchannel_gpu_kernel.cc
+++ b/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perchannel_gpu_kernel.cc
@@ -102,9 +102,9 @@ void FakeQuantPerChannelGpuKernel::InitSizeLists() {
 void FakeQuantPerChannelGpuKernel::CalFakeQuantize(float *input, float *output, float *input_min, float *input_max,
                                                    float *nudge_min, float *nudge_max, float *scale, void *stream_ptr) {
   CalNudgePerChannel(input_min, input_max, quant_min_, quant_max_, nudge_min, nudge_max, scale, num_channels_,
-                     reinterpret_cast<cudaStream_t>(stream_ptr));
-  CalFakeQuantizePerChannel(input, output, input_size_ / sizeof(float), num_channels_, nudge_min, nudge_max, scale,
-                            symmetric_, reinterpret_cast<cudaStream_t>(stream_ptr));
+                     symmetric_, reinterpret_cast<cudaStream_t>(stream_ptr));
+  CalFakeQuantPerChannel(input, output, input_size_ / sizeof(float), num_channels_, nudge_min, nudge_max, scale,
+                         reinterpret_cast<cudaStream_t>(stream_ptr));
 }
 
 bool FakeQuantPerChannelGpuKernel::Launch(const std::vector<AddressPtr> &inputs,
diff --git a/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perchannel_grad_gpu_kernel.cc b/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perchannel_grad_gpu_kernel.cc
index a57516eb2c75c5440d32db1eee774453529ee6d7..5c774c05edd90f90e26d5eb450b897a0a5382287 100644
--- a/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perchannel_grad_gpu_kernel.cc
+++ b/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perchannel_grad_gpu_kernel.cc
@@ -119,9 +119,9 @@ bool FakeQuantPerChannelGradGpuKernel::Launch(const std::vector<AddressPtr> &inp
   int total_size = input_size_ / sizeof(float);
   if (global_step_ >= quant_delay_) {
     CalNudgePerChannel(input_min, input_max, quant_min_, quant_max_, nudge_min, nudge_max, scale, num_channels_,
-                       reinterpret_cast<cudaStream_t>(stream_ptr));
-    CalFakeQuantizePerChannelGrad(input, gradient, output, total_size, num_channels_, nudge_min, nudge_max,
-                                  reinterpret_cast<cudaStream_t>(stream_ptr));
+                       symmetric_, reinterpret_cast<cudaStream_t>(stream_ptr));
+    CalFakeQuantPerChannelGrad(input, gradient, output, total_size, num_channels_, nudge_min, nudge_max,
+                               reinterpret_cast<cudaStream_t>(stream_ptr));
   } else {
     CHECK_CUDA_RET_WITH_ERROR(cudaMemcpyAsync(output, gradient, input_size_, cudaMemcpyDeviceToDevice,
                                               reinterpret_cast<cudaStream_t>(stream_ptr)),
diff --git a/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perlayer_gpu_kernel.cc b/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perlayer_gpu_kernel.cc
index 845fb5b923d3e1952989150242bc394f15cd3045..44869983eb8988919e9d4472f2e308f271b1911c 100644
--- a/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perlayer_gpu_kernel.cc
+++ b/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perlayer_gpu_kernel.cc
@@ -117,10 +117,10 @@ bool FakeQuantPerLayerGpuKernel::Launch(const std::vector<AddressPtr> &inputs, c
     // control flow for quant_delay
     if (global_step_ >= quant_delay_) {
       // real launch
-      CalNudge(input_min, input_max, quant_min_, quant_max_, nudge_min, nudge_max, scale,
-               reinterpret_cast<cudaStream_t>(stream_ptr));
-      CalFakeQuantize(input, output, quant_num_, nudge_min, nudge_max, scale, symmetric_,
-                      reinterpret_cast<cudaStream_t>(stream_ptr));
+      CalNudgePerLayer(input_min, input_max, quant_min_, quant_max_, nudge_min, nudge_max, scale, symmetric_,
+                       reinterpret_cast<cudaStream_t>(stream_ptr));
+      CalFakeQuantPerLayer(input, output, quant_num_, nudge_min, nudge_max, scale,
+                           reinterpret_cast<cudaStream_t>(stream_ptr));
     } else {
       CHECK_CUDA_RET_WITH_ERROR(cudaMemcpyAsync(output, input, input_size_, cudaMemcpyDeviceToDevice,
                                                 reinterpret_cast<cudaStream_t>(stream_ptr)),
@@ -129,10 +129,10 @@ bool FakeQuantPerLayerGpuKernel::Launch(const std::vector<AddressPtr> &inputs, c
     global_step_++;
   } else {
     // real launch
-    CalNudge(input_min, input_max, quant_min_, quant_max_, nudge_min, nudge_max, scale,
-             reinterpret_cast<cudaStream_t>(stream_ptr));
-    CalFakeQuantize(input, output, quant_num_, nudge_min, nudge_max, scale, symmetric_,
-                    reinterpret_cast<cudaStream_t>(stream_ptr));
+    CalNudgePerLayer(input_min, input_max, quant_min_, quant_max_, nudge_min, nudge_max, scale, symmetric_,
+                     reinterpret_cast<cudaStream_t>(stream_ptr));
+    CalFakeQuantPerLayer(input, output, quant_num_, nudge_min, nudge_max, scale,
+                         reinterpret_cast<cudaStream_t>(stream_ptr));
   }
 
   return true;
diff --git a/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perlayer_grad_gpu_kernel.cc b/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perlayer_grad_gpu_kernel.cc
index 9c6584e23965774c67320caac09d62280220b512..c8d57b2bb1fa6cce3e840923b182545fe48fd129 100644
--- a/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perlayer_grad_gpu_kernel.cc
+++ b/mindspore/ccsrc/kernel/gpu/quant/fake_quant_perlayer_grad_gpu_kernel.cc
@@ -115,10 +115,10 @@ bool FakeQuantPerLayerGradGpuKernel::Launch(const std::vector<AddressPtr> &input
   }
 
   if (global_step_ >= quant_delay_) {
-    CalNudge(input_min, input_max, quant_min_, quant_max_, nudge_min, nudge_max, scale,
-             reinterpret_cast<cudaStream_t>(stream_ptr));
-    CalFakeQuantizeGrad(input, gradient, output, quant_num_, nudge_min, nudge_max,
-                        reinterpret_cast<cudaStream_t>(stream_ptr));
+    CalNudgePerLayer(input_min, input_max, quant_min_, quant_max_, nudge_min, nudge_max, scale, symmetric_,
+                     reinterpret_cast<cudaStream_t>(stream_ptr));
+    CalFakeQuantPerLayerGrad(input, gradient, output, quant_num_, nudge_min, nudge_max,
+                             reinterpret_cast<cudaStream_t>(stream_ptr));
   } else {
     CHECK_CUDA_RET_WITH_ERROR(cudaMemcpyAsync(output, gradient, input_size_, cudaMemcpyDeviceToDevice,
                                               reinterpret_cast<cudaStream_t>(stream_ptr)),
diff --git a/mindspore/train/quant/quant.py b/mindspore/train/quant/quant.py
index 937e54a7e48c427f2df5dc174099932c6d77c0b7..46b3cd1934f540745d925f3164b05807a4d38999 100644
--- a/mindspore/train/quant/quant.py
+++ b/mindspore/train/quant/quant.py
@@ -150,7 +150,7 @@ class ConvertToQuantNetwork:
             prefix = name
             add_quant = _AddFakeQuantAfterSubCell(prim_op,
                                                   num_bits=self.act_bits,
-                                                  quant_delay=self.act_delay,
+                                                  quant_delay=self.act_qdelay,
                                                   per_channel=self.act_channel,
                                                   symmetric=self.act_symmetric,
                                                   narrow_range=self.act_range)
@@ -408,19 +408,19 @@ def convert_quant_network(network,
 
     Args:
         network (Cell): Obtain a pipeline through network for saving graph summary.
-        quant_delay (int or tuple): Number of steps after which weights and activations are quantized during
-            eval. The first element represent weights and second element represent data flow. Default: (0, 0)
         bn_fold (bool): Flag to used bn fold ops for simulation inference operation. Default: False.
         freeze_bn (int): Number of steps after which BatchNorm OP parameters used total mean and variance. Default: 0.
-        num_bits (int or tuple): Number of bits to use for quantizing weights and activations. The first
+        quant_delay (int, list or tuple): Number of steps after which weights and activations are quantized during
+            eval. The first element represent weights and second element represent data flow. Default: (0, 0)
+        num_bits (int, list or tuple): Number of bits to use for quantizing weights and activations. The first
             element represent weights and second element represent data flow. Default: (8, 8)
-        per_channel (int or tuple):  Quantization granularity based on layer or on channel. If `True`
+        per_channel (bool, list or tuple):  Quantization granularity based on layer or on channel. If `True`
             then base on per channel otherwise base on per layer. The first element represent weights
             and second element represent data flow. Default: (False, False)
-        symmetric (int or tuple): Quantization algorithm use symmetric or not. If `True` then base on
-            symmetric otherwise base on assymmetric. The first element represent weights and second
+        symmetric (bool, list or tuple): Quantization algorithm use symmetric or not. If `True` then base on
+            symmetric otherwise base on asymmetric. The first element represent weights and second
             element represent data flow. Default: (False, False)
-        narrow_range (int or tuple): Quantization algorithm use narrow range or not. If `True` then base
+        narrow_range (bool, list or tuple): Quantization algorithm use narrow range or not. If `True` then base
             on narrow range otherwise base on off narrow range. The first element represent weights and
             second element represent data flow. Default: (False, False)
 
diff --git a/tests/st/ops/gpu/test_fake_quant_perchannel.py b/tests/st/ops/gpu/test_fake_quant_perchannel.py
new file mode 100644
index 0000000000000000000000000000000000000000..caa7d4b7e80acd9c89a1781c8c79d4cb5829adc4
--- /dev/null
+++ b/tests/st/ops/gpu/test_fake_quant_perchannel.py
@@ -0,0 +1,625 @@
+# Copyright 2020 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+
+import numpy as np
+import pytest
+
+import mindspore.context as context
+from mindspore.common.tensor import Tensor
+from mindspore import nn
+from mindspore.ops.operations import _quant_ops as Q
+
+context.set_context(device_target='GPU', device_id=0)
+
+
+class Net(nn.Cell):
+    def __init__(self, num_bits=8, symmetric=False, narrow_range=False, channel_axis=1):
+        super(Net, self).__init__()
+        self.op = Q.FakeQuantPerChannel(num_bits=num_bits,
+                                        symmetric=symmetric,
+                                        narrow_range=narrow_range,
+                                        channel_axis=channel_axis)
+
+    def construct(self, x, minq, maxq):
+        return self.op(x, minq, maxq)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel1():
+    # WithVarsPerChannel_ZeroMinAndMax
+    x = np.array([0.0, 0.0, 0.0, 0.0]).astype(np.float32)
+    min_val = np.array([0.0, 0.0, 0.0, 0.0]).astype(np.float32)
+    max_val = np.array([0.0, 0.0, 0.0, 0.0]).astype(np.float32)
+    expect = np.array([0.0, 0.0, 0.0, 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False, channel_axis=0)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel2():
+    # WithVarsPerChannelDim1NudgedDown_RegularRange
+    # scale 1/4, zp 0.4, nudge 0. nudged ranges [0.0, 63.75]
+    x = np.array([-0.1, 0.0, 63.75, 63.8]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1, -0.1]).astype(np.float32)
+    max_val = np.array([63.65, 63.65, 63.65, 63.65]).astype(np.float32)
+    expect = np.array([0.0, 0.0, 63.75, 63.75]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False, channel_axis=0)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel3():
+    # WithVarsPerChannelDim1NudgedDown_NarrowRange
+    # scale 1/4, zp 1.4, nudge 1. nudged ranges[0.0, 63.5]
+    x = np.array([-0.1, 0.0, 63.5, 63.6]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1, -0.1]).astype(np.float32)
+    max_val = np.array([63.4, 63.4, 63.4, 63.4]).astype(np.float32)
+    expect = np.array([0.0, 0.0, 63.5, 63.5]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True, channel_axis=0)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel4():
+    # WithVarsPerChannelDim1NudgedUp_RegularRange
+    # [-0.125, 63.625]
+    # scale 1/4, zp: 0.5, nudge 0. nudged range [-0.25, 63.5]
+    x = np.array([-0.26, -0.25, -0.24, 63.6]).astype(np.float32)
+    expect = np.array([-0.25, -0.25, -0.25, 63.5]).astype(np.float32)
+    min_val = np.array([-0.125, -0.125, -0.125, -0.125]).astype(np.float32)
+    max_val = np.array([63.625, 63.625, 63.625, 63.625]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False, channel_axis=0)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel5():
+    # WithVarsPerChannelDim1NudgedUp_NarrowRange
+    # scale 1/4, zp: 1.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.26, -0.25, -0.24, 63.3]).astype(np.float32)
+    expect = np.array([-0.25, -0.25, -0.25, 63.25]).astype(np.float32)
+    min_val = np.array([-0.125, -0.125, -0.125, -0.125]).astype(np.float32)
+    max_val = np.array([63.375, 63.375, 63.375, 63.375]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True, channel_axis=0)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel6():
+    # WithVarsPerChannelDim2NudgedDown_RegularRange
+    # scale 1/4, zp: 0.4, nudge 0. nudged range [-0.25, 63.75]
+    x = np.array([-0.1, 0.0, 0.1, 0.25, 63.75, 63.80]
+                 ).reshape(2, 3).astype(np.float32)
+    expect = np.array([-0.0, 0.0, 0.0, 0.25, 63.75, 63.75]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1]).reshape(3).astype(np.float32)
+    max_val = np.array([63.65, 63.65, 63.65]).reshape(3).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel7():
+    # WithVarsPerChannelDim2NudgedDown_NarrowRange
+    # scale 1/4, zp: 1.4, nudge 1. nudged range [-0.25, 63.5]
+    x = np.array([-0.1, 0.0, 0.1, 0.25, 63.5, 63.6]
+                 ).reshape(2, 3).astype(np.float32)
+    expect = np.array([0.0, 0.0, 0.0, 0.25, 63.5, 63.5]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1]).reshape(3).astype(np.float32)
+    max_val = np.array([63.4, 63.4, 63.4]).reshape(3).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel8():
+    # WithVarsPerChannelDim2NudgedUp_RegularRange
+    # scale 1/4, zp: 0.5, nudge 1. nudged range [-0.25, 63.5]
+    x = np.array([-0.26, -0.25, -0.24, 0.0, 63.5, 63.6]
+                 ).reshape(2, 3).astype(np.float32)
+    expect = np.array([-0.25, -0.25, -0.25, 0.0, 63.5, 63.5]
+                      ).astype(np.float32)
+    min_val = np.array([-0.125, -0.125, -0.125]).reshape(3).astype(np.float32)
+    max_val = np.array([63.625, 63.625, 63.625]).reshape(3).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel9():
+    # WithVarsPerChannelDim2NudgedUp_NarrowRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.26, -0.25, -0.24, 0.0, 63.25, 63.3]
+                 ).reshape(2, 3).astype(np.float32)
+    expect = np.array(
+        [-0.25, -0.25, -0.25, 0.0, 63.25, 63.25]).astype(np.float32)
+    min_val = np.array([-0.125, -0.125, -0.125]).reshape(3).astype(np.float32)
+    max_val = np.array([63.375, 63.375, 63.375]).reshape(3).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel10():
+    # WithVarsPerChannelDim4NudgedDown_RegularRange
+    # scale 1/4, zp: 0.4, nudge 0. nudged range [-0.25, 63.25]
+    x = np.array([-0.1, 0.0, 0.1, 0.25, 0.5, 0.75,
+                  1.0, 1.25, 1.5, 1.75, 2.0, 2.25,
+                  63.0, 63.25, 63.5, 63.7, 63.75, 63.8,
+                  63.9, 100.0, 100.0, 100.0, 100.0, 1000.0]).reshape(1, 4, 2, 3).astype(np.float32)
+    expect = np.array([0.0, 0.0, 0.0, 0.25, 0.5, 0.75,
+                       1.0, 1.25, 1.5, 1.75, 2.0, 2.25,
+                       63.0, 63.25, 63.5, 63.75, 63.75, 63.75,
+                       63.75, 63.75, 63.75, 63.75, 63.75, 63.75]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1, -0.1]).reshape(4).astype(np.float32)
+    max_val = np.array([63.65, 63.65, 63.65, 63.65]
+                       ).reshape(4).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel11():
+    # WithVarsPerChannelDim4NudgedDown_NarrowRange
+    # scale 1/4, zp: 1.4, nudge 1. nudged range [0.0, 63.25]
+    x = np.array([-0.1, 0.0, 0.1, 0.25, 0.5, 0.75,
+                  1.0, 1.25, 1.5, 1.75, 2.0, 2.25,
+                  63.0, 63.25, 63.3, 63.4, 63.5, 63.6,
+                  63.7, 100.0, 100.0, 100.0, 100.0, 1000.0]).reshape(1, 4, 2, 3).astype(np.float32)
+    expect = np.array([0.0, 0.0, 0.0, 0.25, 0.5, 0.75,
+                       1.0, 1.25, 1.5, 1.75, 2.0, 2.25,
+                       63.0, 63.25, 63.25, 63.5, 63.5, 63.5,
+                       63.5, 63.5, 63.5, 63.5, 63.5, 63.5]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1, -0.1]).reshape(4).astype(np.float32)
+    max_val = np.array([63.4, 63.4, 63.4, 63.4]).reshape(4).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel12():
+    # WithVarsPerChannelDim4NudgedUp_RegularRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.3, -0.25, -0.2, 0.0, 0.25, 0.5,
+                  0.75, 1.0, 1.25, 1.5, 1.75, 2.0,
+                  63.0, 63.25, 63.4, 63.5, 63.6, 63.7,
+                  100.0, 100.0, 100.0, 100.0, 100.0, 1000.0]).reshape(1, 4, 2, 3).astype(np.float32)
+    expect = np.array([-0.25, -0.25, -0.25, 0.0, 0.25, 0.5,
+                       0.75, 1.0, 1.25, 1.5, 1.75, 2.0,
+                       63.0, 63.25, 63.5, 63.5, 63.5, 63.5,
+                       63.5, 63.5, 63.5, 63.5, 63.5, 63.5]).astype(np.float32)
+    min_val = np.array([-0.125, -0.125, -0.125, -0.125]
+                       ).reshape(4).astype(np.float32)
+    max_val = np.array([63.625, 63.625, 63.625, 63.625]
+                       ).reshape(4).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel13():
+    # WithVarsPerChannelDim4NudgedUp_NarrowRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.3, -0.25, -0.2, 0.0, 0.25, 0.5,
+                  0.75, 1.0, 1.25, 1.5, 1.75, 2.0,
+                  63.0, 63.2, 63.25, 63.3, 63.4, 63.5,
+                  100.0, 100.0, 100.0, 100.0, 100.0, 1000.0]).reshape(1, 4, 2, 3).astype(np.float32)
+    expect = np.array([-0.25, -0.25, -0.25, 0.0, 0.25, 0.5,
+                       0.75, 1.0, 1.25, 1.5, 1.75, 2.0,
+                       63.0, 63.25, 63.25, 63.25, 63.25, 63.25,
+                       63.25, 63.25, 63.25, 63.25, 63.25, 63.25]).astype(np.float32)
+    min_val = np.array([-0.125, -0.125, -0.125, -0.125]
+                       ).reshape(4).astype(np.float32)
+    max_val = np.array([63.375, 63.375, 63.375, 63.375]
+                       ).reshape(4).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel14():
+    # WithVarsPerChannelDim1NudgedDown_4Bits_RegularRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.1, 0.0, 7.5, 7.6]).reshape(4).astype(np.float32)
+    expect = np.array([0.0, 0.0, 7.5, 7.5]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1, -0.1]).reshape(4).astype(np.float32)
+    max_val = np.array([7.4, 7.4, 7.4, 7.4]).reshape(4).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=False, channel_axis=0)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel15():
+    # WithVarsPerChannelDim1NudgedDown_4Bits_NarrowRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.1, 0.0, 7.0, 7.1]).reshape(4).astype(np.float32)
+    expect = np.array([0.0, 0.0, 7.0, 7.0]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1, -0.1]).reshape(4).astype(np.float32)
+    max_val = np.array([6.9, 6.9, 6.9, 6.9]).reshape(4).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=True, channel_axis=0)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel16():
+    # WithVarsPerChannelDim1NudgedUp_4Bits_RegularRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.6, -0.5, 7.0, 7.1]).reshape(4).astype(np.float32)
+    expect = np.array([-0.5, -0.5, 7.0, 7.0]).astype(np.float32)
+    min_val = np.array([-0.4, -0.4, -0.4, -0.4]).reshape(4).astype(np.float32)
+    max_val = np.array([7.1, 7.1, 7.1, 7.1]).reshape(4).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=False, channel_axis=0)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel17():
+    # WithVarsPerChannelDim1NudgedUp_4Bits_NarrowRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.6, -0.5, 6.5, 6.6]).reshape(4).astype(np.float32)
+    expect = np.array([-0.5, -0.5, 6.5, 6.5]).astype(np.float32)
+    min_val = np.array([-0.4, -0.4, -0.4, -0.4]).reshape(4).astype(np.float32)
+    max_val = np.array([6.6, 6.6, 6.6, 6.6]).reshape(4).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=True, channel_axis=0)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel18():
+    # WithVarsPerChannelDim2NudgedDown_4Bits_RegularRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.1, 0.0, 0.1, 0.5, 7.5, 7.6]
+                 ).reshape(2, 3).astype(np.float32)
+    expect = np.array([0.0, 0.0, 0.0, 0.5, 7.5, 7.5]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1]).reshape(3).astype(np.float32)
+    max_val = np.array([7.4, 7.4, 7.4]).reshape(3).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=False, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel19():
+    # WithVarsPerChannelDim2NudgedDown_4Bits_NarrowRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.1, 0.0, 0.1, 0.5, 7.0, 7.1]
+                 ).reshape(2, 3).astype(np.float32)
+    expect = np.array([0.0, 0.0, 0.0, 0.5, 7.0, 7.0]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1]).reshape(3).astype(np.float32)
+    max_val = np.array([6.9, 6.9, 6.9]).reshape(3).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=True, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel20():
+    # WithVarsPerChannelDim2NudgedUp_4Bits_RegularRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.51, -0.5, -0.24, 0.0, 7.0, 7.1]
+                 ).reshape(2, 3).astype(np.float32)
+    expect = np.array([-0.5, -0.5, 0.0, 0.0, 7.0, 7.0]).astype(np.float32)
+    min_val = np.array([-0.4, -0.4, -0.4]).reshape(3).astype(np.float32)
+    max_val = np.array([7.1, 7.1, 7.1]).reshape(3).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=False, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel21():
+    # WithVarsPerChannelDim2NudgedUp_4Bits_NarrowRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.6, -0.5, -0.24, 0.0, 6.5, 6.6]
+                 ).reshape(2, 3).astype(np.float32)
+    expect = np.array([-0.5, -0.5, 0.0, 0.0, 6.5, 6.5]).astype(np.float32)
+    min_val = np.array([-0.4, -0.4, -0.4]).reshape(3).astype(np.float32)
+    max_val = np.array([6.6, 6.6, 6.6]).reshape(3).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=True, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel22():
+    # WithVarsPerChannelDim4NudgedDown_4Bits_RegularRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.1, 0.0, 0.1, 0.5, 1.0, 1.5,
+                  1.5, 2.0, 2.5, 3.0, 3.5, 4.0,
+                  6.0, 6.5, 7.0, 7.4, 7.5, 7.7,
+                  7.8, 100.0, 100.0, 100.0, 100.0, 1000.0]).reshape(1, 4, 2, 3).astype(np.float32)
+    expect = np.array([0.0, 0.0, 0.0, 0.5, 1.0, 1.5,
+                       1.5, 2.0, 2.5, 3.0, 3.5, 4.0,
+                       6.0, 6.5, 7.0, 7.5, 7.5, 7.5,
+                       7.5, 7.5, 7.5, 7.5, 7.5, 7.5]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1, -0.1]).reshape(4).astype(np.float32)
+    max_val = np.array([7.4, 7.4, 7.4, 7.4]).reshape(4).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=False, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel23():
+    # WithVarsPerChannelDim4NudgedDown_4Bits_NarrowRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.1, 0.0, 0.1, 0.5, 1.0, 1.5,
+                  1.5, 2.0, 2.5, 3.0, 3.5, 4.0,
+                  6.0, 6.5, 6.8, 6.9, 7.0, 7.1,
+                  7.2, 100.0, 100.0, 100.0, 100.0, 1000.0]).reshape(1, 4, 2, 3).astype(np.float32)
+    expect = np.array([0.0, 0.0, 0.0, 0.5, 1.0, 1.5,
+                       1.5, 2.0, 2.5, 3.0, 3.5, 4.0,
+                       6.0, 6.5, 7.0, 7.0, 7.0, 7.0,
+                       7.0, 7.0, 7.0, 7.0, 7.0, 7.0]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1, -0.1]).reshape(4).astype(np.float32)
+    max_val = np.array([6.9, 6.9, 6.9, 6.9]).reshape(4).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=True, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel24():
+    # WithVarsPerChannelDim4NudgedUp_4Bits_RegularRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.6, -0.5, -0.4, 0.0, 0.5, 1.0,
+                  1.5, 2.0, 2.5, 3.0, 3.5, 4.0,
+                  6.0, 6.5, 6.9, 7.0, 7.1, 7.7,
+                  100.0, 100.0, 100.0, 100.0, 100.0, 1000.0]).reshape(1, 4, 2, 3).astype(np.float32)
+    expect = np.array([-0.5, -0.5, -0.5, 0.0, 0.5, 1.0,
+                       1.5, 2.0, 2.5, 3.0, 3.5, 4.0,
+                       6.0, 6.5, 7.0, 7.0, 7.0, 7.0,
+                       7.0, 7.0, 7.0, 7.0, 7.0, 7.0]).astype(np.float32)
+    min_val = np.array([-0.4, -0.4, -0.4, -0.4]).reshape(4).astype(np.float32)
+    max_val = np.array([7.1, 7.1, 7.1, 7.1]).reshape(4).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=False, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_perchannel25():
+    # WithVarsPerChannelDim4NudgedUp_4Bits_NarrowRange
+    # scale 1/4, zp: 0.5, nudge 2. nudged range [-0.25, 63.25]
+    x = np.array([-0.6, -0.5, -0.4, 0.0, 0.5, 1.0,
+                  1.5, 2.0, 2.5, 3.0, 3.5, 4.0,
+                  5.5, 6.0, 6.4, 6.5, 6.6, 6.7,
+                  100.0, 100.0, 100.0, 100.0, 100.0, 1000.0]).reshape(1, 4, 2, 3).astype(np.float32)
+    expect = np.array([-0.5, -0.5, -0.5, 0.0, 0.5, 1.0,
+                       1.5, 2.0, 2.5, 3.0, 3.5, 4.0,
+                       5.5, 6.0, 6.5, 6.5, 6.5, 6.5,
+                       6.5, 6.5, 6.5, 6.5, 6.5, 6.5]).astype(np.float32)
+    min_val = np.array([-0.4, -0.4, -0.4, -0.4]).reshape(4).astype(np.float32)
+    max_val = np.array([6.6, 6.6, 6.6, 6.6]).reshape(4).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=True, channel_axis=1)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
diff --git a/tests/st/ops/gpu/test_fake_quant_perchannel_grad.py b/tests/st/ops/gpu/test_fake_quant_perchannel_grad.py
new file mode 100644
index 0000000000000000000000000000000000000000..aeb90b680434ce1afa1c7415710b5bfa627b0a3d
--- /dev/null
+++ b/tests/st/ops/gpu/test_fake_quant_perchannel_grad.py
@@ -0,0 +1,373 @@
+# Copyright 2020 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+
+import numpy as np
+import pytest
+from mindspore import Tensor
+import mindspore.nn as nn
+import mindspore.context as context
+from mindspore.ops.operations import _quant_ops as Q
+
+context.set_context(device_target='GPU', device_id=0)
+
+
+class Net(nn.Cell):
+    def __init__(self, num_bits=8, narrow_range=False):
+        super(Net, self).__init__()
+        self.op = Q.FakeQuantPerChannelGrad(
+            num_bits=num_bits, narrow_range=narrow_range)
+
+    def construct(self, dout, x, minq, maxq):
+        return self.op(dout, x, minq, maxq)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad1():
+    # WithVarsPerChannelDim1GradientNudgedDown_ZeroMinAndMax
+    dout = np.random.uniform(-1, 1, size=[4]).astype('float32')
+    x = np.array([0.0, 0.0, 0.0, 0.0]).astype(np.float32)
+    min_val = np.array([0.0, 0.0, 0.0, 0.0]).astype(np.float32)
+    max_val = np.array([0.0, 0.0, 0.0, 0.0]).astype(np.float32)
+    expect = dout
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad2():
+    # WithVarsPerChannelDim1GradientNudgedDown_RegularRange
+    dout = np.random.uniform(-1, 1, size=[4]).astype('float32')
+    x = np.array([-0.1, 0.0, 63.75, 63.8]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1, -0.1]).astype(np.float32)
+    max_val = np.array([63.65, 63.65, 63.65, 63.65]).astype(np.float32)
+    expect = np.array([0.0, dout[1], dout[2], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad3():
+    # WithVarsPerChannelDim1GradientNudgedDown_NarrowRange
+    dout = np.random.uniform(-1, 1, size=[4]).astype('float32')
+    x = np.array([-0.1, 0.0, 63.5, 63.6]).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1, -0.1]).astype(np.float32)
+    max_val = np.array([63.4, 63.4, 63.4, 63.4]).astype(np.float32)
+    expect = np.array([0.0, dout[1], dout[2], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad4():
+    # WithVarsPerChannelDim1GradientNudgedUp_RegularRange
+    dout = np.random.uniform(-1, 1, size=[4]).astype('float32')
+    x = np.array([-0.3, -0.25, 63.5, 63.6]).astype(np.float32)
+    min_val = np.array([-0.125, -0.125, -0.125, -0.125]).astype(np.float32)
+    max_val = np.array([63.625, 63.625, 63.625, 63.625]).astype(np.float32)
+    expect = np.array([0.0, dout[1], dout[2], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad5():
+    # WithVarsPerChannelDim1GradientNudgedUp_NarrowRange
+    dout = np.random.uniform(-1, 1, size=[4]).astype('float32')
+    x = np.array([-0.3, -0.25, 63.25, 63.3]).astype(np.float32)
+    min_val = np.array([-0.125, -0.125, -0.125, -0.125]).astype(np.float32)
+    max_val = np.array([63.375, 63.375, 63.375, 63.375]).astype(np.float32)
+    expect = np.array([0.0, dout[1], dout[2], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad6():
+    # WithVarsPerChannelDim2GradientNudgedDown_RegularRange
+    read_dout = np.random.uniform(-1, 1, size=[3, 2]).astype('float32')
+    x = np.array([-0.1, 0.0, 0.1, 0.25, 63.75, 63.8]
+                 ).reshape(3, 2).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1]).astype(np.float32)
+    max_val = np.array([63.65, 63.65, 63.65]).astype(np.float32)
+    dout = read_dout.flatten()
+    expect = np.array([0.0, dout[1], dout[2], dout[3],
+                       dout[4], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(read_dout), Tensor(
+        x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad7():
+    # WithVarsPerChannelDim2GradientNudgedDown_NarrowRange
+    read_dout = np.random.uniform(-1, 1, size=[3, 2]).astype('float32')
+    x = np.array([-0.1, 0.0, 0.1, 0.25, 63.5, 63.6]
+                 ).reshape(3, 2).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1]).astype(np.float32)
+    max_val = np.array([63.4, 63.4, 63.4]).astype(np.float32)
+    dout = read_dout.flatten()
+    expect = np.array([0.0, dout[1], dout[2], dout[3],
+                       dout[4], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(read_dout), Tensor(
+        x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad8():
+    # WithVarsPerChannelDim2GradientNudgedUp_RegularRange
+    read_dout = np.random.uniform(-1, 1, size=[3, 2]).astype('float32')
+    x = np.array([-0.3, -0.25, -0.2, 0.0, 63.5, 63.6]
+                 ).reshape(3, 2).astype(np.float32)
+    min_val = np.array([-0.125, -0.125, -0.125]).astype(np.float32)
+    max_val = np.array([63.625, 63.625, 63.625]).astype(np.float32)
+    dout = read_dout.flatten()
+    expect = np.array([0.0, dout[1], dout[2], dout[3],
+                       dout[4], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(read_dout), Tensor(
+        x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad9():
+    # WithVarsPerChannelDim2GradientNudgedUp_NarrowRange
+    read_dout = np.random.uniform(-1, 1, size=[3, 2]).astype('float32')
+    x = np.array([-0.3, -0.25, -0.2, 0.0, 63.25, 63.3]
+                 ).reshape(3, 2).astype(np.float32)
+    min_val = np.array([-0.125, -0.125, -0.125]).astype(np.float32)
+    max_val = np.array([63.375, 63.375, 63.375]).astype(np.float32)
+    dout = read_dout.flatten()
+    expect = np.array([0.0, dout[1], dout[2], dout[3],
+                       dout[4], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(read_dout), Tensor(
+        x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad10():
+    # WithVarsPerChannelDim4GradientNudgedDown_RegularRange
+    read_dout = np.random.uniform(-1, 1, size=[4, 3, 2, 1]).astype('float32')
+    x = np.array([-0.1, 0.0, 63.75, 63.8, -0.1, 0.0,
+                  63.75, 63.8, -0.1, 0.0, 63.75, 63.8,
+                  -0.1, 0.0, 63.75, 63.8, -0.1, 0.0,
+                  63.75, 63.8, -0.1, 0.0, 63.75, 63.8]).reshape(4, 3, 2, 1).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1, -0.1]).astype(np.float32)
+    max_val = np.array([63.65, 63.65, 63.65, 63.65]).astype(np.float32)
+    dout = read_dout.flatten()
+    expect = np.array([0.0, dout[1], dout[2], 0.0,
+                       0.0, dout[5], dout[6], 0.0,
+                       0.0, dout[9], dout[10], 0.0,
+                       0.0, dout[13], dout[14], 0.0,
+                       0.0, dout[17], dout[18], 0.0,
+                       0.0, dout[21], dout[22], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(read_dout), Tensor(
+        x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad11():
+    # WithVarsPerChannelDim4GradientNudgedDown_NarrowRange
+    read_dout = np.random.uniform(-1, 1, size=[4, 3, 2, 1]).astype('float32')
+    x = np.array([-0.1, 0.0, 63.5, 63.6, -0.1, 0.0, 63.5, 63.6, -0.1, 0.0, 63.5, 63.6, -0.1, 0.0, 63.5,
+                  63.6, -0.1, 0.0, 63.5, 63.6, -0.1, 0.0, 63.5, 63.6]).reshape(4, 3, 2, 1).astype(np.float32)
+    min_val = np.array([-0.1, -0.1, -0.1, -0.1]).astype(np.float32)
+    max_val = np.array([63.4, 63.4, 63.4, 63.4]).astype(np.float32)
+    dout = read_dout.flatten()
+    expect = np.array([0.0, dout[1], dout[2], 0.0,
+                       0.0, dout[5], dout[6], 0.0,
+                       0.0, dout[9], dout[10], 0.0,
+                       0.0, dout[13], dout[14], 0.0,
+                       0.0, dout[17], dout[18], 0.0,
+                       0.0, dout[21], dout[22], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(read_dout), Tensor(
+        x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad12():
+    # WithVarsPerChannelDim4GradientNudgedUp_RegularRange
+    read_dout = np.random.uniform(-1, 1, size=[4, 3, 2, 1]).astype('float32')
+    x = np.array([-0.3, -0.25, 63.5, 63.6, -0.3, -0.25,
+                  63.5, 63.6, -0.3, -0.25, 63.5, 63.6,
+                  -0.3, -0.25, 63.5, 63.6, -0.3, -0.25,
+                  63.5, 63.6, -0.3, -0.25, 63.5, 63.6]).reshape(4, 3, 2, 1).astype(np.float32)
+    min_val = np.array([-0.125, -0.125, -0.125, -0.125]).astype(np.float32)
+    max_val = np.array([63.625, 63.625, 63.625, 63.625]).astype(np.float32)
+    dout = read_dout.flatten()
+    expect = np.array([0.0, dout[1], dout[2], 0.0,
+                       0.0, dout[5], dout[6], 0.0,
+                       0.0, dout[9], dout[10], 0.0,
+                       0.0, dout[13], dout[14], 0.0,
+                       0.0, dout[17], dout[18], 0.0,
+                       0.0, dout[21], dout[22], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(read_dout), Tensor(
+        x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad13():
+    # WithVarsPerChannelDim4GradientNudgedUp_NarrowRange
+    read_dout = np.random.uniform(-1, 1, size=[4, 3, 2, 1]).astype('float32')
+    x = np.array([-0.3, -0.25, 63.25, 63.3, -0.3, -0.25,
+                  63.25, 63.3, -0.3, -0.25, 63.25, 63.3,
+                  -0.3, -0.25, 63.25, 63.3, -0.3, -0.25,
+                  63.25, 63.3, -0.3, -0.25, 63.25, 63.3]).reshape(4, 3, 2, 1).astype(np.float32)
+    min_val = np.array([-0.125, -0.125, -0.125, -0.125]).astype(np.float32)
+    max_val = np.array([63.375, 63.375, 63.375, 63.375]).astype(np.float32)
+    dout = read_dout.flatten()
+    expect = np.array([0.0, dout[1], dout[2], 0.0,
+                       0.0, dout[5], dout[6], 0.0,
+                       0.0, dout[9], dout[10], 0.0,
+                       0.0, dout[13], dout[14], 0.0,
+                       0.0, dout[17], dout[18], 0.0,
+                       0.0, dout[21], dout[22], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(read_dout), Tensor(
+        x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("=" * 40)
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
diff --git a/tests/st/ops/gpu/test_fake_quant_perlayer.py b/tests/st/ops/gpu/test_fake_quant_perlayer.py
new file mode 100644
index 0000000000000000000000000000000000000000..661cea09253249ac6ee6db963b3cfaf5ab45f707
--- /dev/null
+++ b/tests/st/ops/gpu/test_fake_quant_perlayer.py
@@ -0,0 +1,386 @@
+# Copyright 2020 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+
+import numpy as np
+import pytest
+
+import mindspore.context as context
+from mindspore.common.tensor import Tensor
+import mindspore.nn as nn
+from mindspore.ops.operations import _quant_ops as Q
+
+context.set_context(device_target='GPU', device_id=0)
+
+
+class Net(nn.Cell):
+    def __init__(self,
+                 num_bits=8,
+                 quant_delay=0,
+                 symmetric=False,
+                 narrow_range=False,
+                 training=True):
+        super(Net, self).__init__()
+        self.fake_quant = Q.FakeQuantPerLayer(num_bits=num_bits,
+                                              quant_delay=quant_delay,
+                                              symmetric=symmetric,
+                                              narrow_range=narrow_range,
+                                              training=training)
+
+    def construct(self, x, minq, maxq):
+        return self.fake_quant(x, minq, maxq)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant1():
+    # (8, false, 0.0f, 0.0f, TensorShape({2, 3}),
+    # {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f},
+    # {0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f});
+    x = np.array([0.0, 0.0, 0.0, 0.0, 0.0, 0.0]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([0]).reshape(1).astype(np.float32)
+    max_val = np.array([0]).reshape(1).astype(np.float32)
+    expect = np.array([0.0, 0.0, 0.0, 0.0, 0.0, 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant2():
+    # 8, false, -10.0f, 53.75f, TensorShape({2, 3}),
+    # {-10.1f, -10.0f, -9.9f, -9.75f, 53.75f, 53.8f},
+    # {-10.0f, -10.0f, -10.0f, -9.75f, 53.75f, 53.75f});
+    x = np.array([-10.1, -10.0, -9.9, -9.75, 53.75, 53.8]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-10.0]).reshape(1).astype(np.float32)
+    max_val = np.array([53.75]).reshape(1).astype(np.float32)
+    expect = np.array([-10.0, -10.0, -10.0, -9.75, 53.75, 53.75]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant3():
+    # WithVarsNoNudging_NarrowRange
+    x = np.array([-10.1, -10.0, -9.90, -9.75, 53.5, 53.6]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-10.0]).reshape(1).astype(np.float32)
+    max_val = np.array([53.5]).reshape(1).astype(np.float32)
+    expect = np.array([-10.0, -10.0, -10.0, -9.75, 53.5, 53.5]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant4():
+    # WithVarsNudgedDown_RegularRange
+    x = np.array([-0.1, 0.0, 0.1, 0.25, 63.75, 63.8]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-0.1]).reshape(1).astype(np.float32)
+    max_val = np.array([63.65]).reshape(1).astype(np.float32)
+    expect = np.array([-0.0, 0.0, 0.0, 0.25, 63.75, 63.75]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant5():
+    # WithVarsNudgedDown_NarrowRange
+    x = np.array([-0.1, 0.0, 0.1, 0.25, 63.5, 63.6]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-0.1]).reshape(1).astype(np.float32)
+    max_val = np.array([63.4]).reshape(1).astype(np.float32)
+    expect = np.array([-0.0, 0.0, 0.0, 0.25, 63.5, 63.5]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant6():
+    # WithVarsNudgedUp_RegularRange
+    x = np.array([-0.26, -0.25, -0.24, 0.0, 63.5, 63.6]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-0.125]).reshape(1).astype(np.float32)
+    max_val = np.array([63.625]).reshape(1).astype(np.float32)
+    expect = np.array([-0.25, -0.25, -0.25, 0.0, 63.5, 63.5]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant7():
+    # WithVarsNudgedUp_NarrowRange
+    x = np.array([-0.26, -0.25, -0.24, 0.0, 63.25, 63.3]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-0.125]).reshape(1).astype(np.float32)
+    max_val = np.array([63.375]).reshape(1).astype(np.float32)
+    expect = np.array([-0.25, -0.25, -0.25, 0.0, 63.25, 63.25]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant8():
+    # WithVarsNudgedZeroIs255_RegularRange
+    x = np.array([-63.80, -63.75, -63.70, -63.5, 0.0, 0.1]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-63.65]).reshape(1).astype(np.float32)
+    max_val = np.array([0.1]).reshape(1).astype(np.float32)
+    expect = np.array([-63.75, -63.75, -63.75, -63.5, 0.0, 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant9():
+    # WithVarsNudgedZeroIs255_NarrowRange
+    x = np.array([-63.6, -63.5, -63.4, -63.25, 0.0, 0.1]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-63.4]).reshape(1).astype(np.float32)
+    max_val = np.array([0.1]).reshape(1).astype(np.float32)
+    expect = np.array([-63.5, -63.5, -63.5, -63.25, 0.0, 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant10():
+    # WithVarsNoNudging_4Bits_RegularRange
+    x = np.array([-6.1, -6.0, -5.9, -5.5, 1.5, 1.6]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-6.0]).reshape(1).astype(np.float32)
+    max_val = np.array([1.5]).reshape(1).astype(np.float32)
+    expect = np.array([-6.0, -6.0, -6.0, -5.5, 1.5, 1.5]).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=False)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant11():
+    # WithVarsNoNudging_4Bits_NarrowRange
+    x = np.array([-6.1, -6.0, -5.9, -5.5, 1.0, 1.1]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-6.0]).reshape(1).astype(np.float32)
+    max_val = np.array([1.0]).reshape(1).astype(np.float32)
+    expect = np.array([-6.0, -6.0, -6.0, -5.5, 1.0, 1.0]).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=True)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant12():
+    # WithVarsNudgedDown_4Bits_RegularRange
+    x = np.array([-0.1, 0.0, 0.1, 0.5, 7.5, 7.6]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-0.1]).reshape(1).astype(np.float32)
+    max_val = np.array([7.4]).reshape(1).astype(np.float32)
+    expect = np.array([-0.0, 0.0, 0.0, 0.5, 7.5, 7.5]).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=False)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant13():
+    # WithVarsNudgedDown_4Bits_NarrowRange
+    x = np.array([-0.1, 0.0, 0.1, 0.5, 7.0, 7.1]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-0.1]).reshape(1).astype(np.float32)
+    max_val = np.array([6.9]).reshape(1).astype(np.float32)
+    expect = np.array([-0.0, 0.0, 0.0, 0.5, 7.0, 7.0]).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=True)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant14():
+    # WithVarsNudgedUp_4Bits_RegularRange
+    x = np.array([-0.6, -0.5, -0.24, 0.0, 7.0, 7.1]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-0.4]).reshape(1).astype(np.float32)
+    max_val = np.array([7.1]).reshape(1).astype(np.float32)
+    expect = np.array([-0.5, -0.5, -0.00, 0.0, 7.0, 7.0]).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=False)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant15():
+    # WithVarsNudgedUp_4Bits_NarrowRange
+    x = np.array([-0.6, -0.5, -0.24, 0.0, 6.5, 6.6]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-0.4]).reshape(1).astype(np.float32)
+    max_val = np.array([6.6]).reshape(1).astype(np.float32)
+    expect = np.array([-0.5, -0.5, -0.00, 0.0, 6.5, 6.5]).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=True)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant16():
+    # WithVarsNudgedZero15_4Bits_RegularRange
+    x = np.array([-7.6, -7.5, -7.4, -7.2, 0.0, 0.1]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-7.3]).reshape(1).astype(np.float32)
+    max_val = np.array([0.2]).reshape(1).astype(np.float32)
+    expect = np.array([-7.5, -7.5, -7.5, -7.0, 0.0, 0.0]).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=False)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant17():
+    # WithVarsNudgedZero15_4Bits_NarrowRange
+    x = np.array([-7.1, -7.0, -6.9, -6.5, 0.0, 0.1]).reshape(2, 3).astype(np.float32)
+    min_val = np.array([-6.8]).reshape(1).astype(np.float32)
+    max_val = np.array([0.2]).reshape(1).astype(np.float32)
+    expect = np.array([-7.0, -7.0, -7.0, -6.5, 0.0, 0.0]).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=True)
+    output = net(Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
diff --git a/tests/st/ops/gpu/test_fake_quant_perlayer_grad.py b/tests/st/ops/gpu/test_fake_quant_perlayer_grad.py
new file mode 100644
index 0000000000000000000000000000000000000000..f8330eff9f19f5931eb1442d3f3cc9082aada8fb
--- /dev/null
+++ b/tests/st/ops/gpu/test_fake_quant_perlayer_grad.py
@@ -0,0 +1,221 @@
+# Copyright 2020 Huawei Technologies Co., Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============================================================================
+
+import numpy as np
+import pytest
+from mindspore import Tensor
+import mindspore.nn as nn
+import mindspore.context as context
+from mindspore.ops.operations import _quant_ops as Q
+
+context.set_context(device_target='GPU', device_id=0)
+
+
+class Net(nn.Cell):
+    def __init__(self, num_bits=8, narrow_range=False):
+        super(Net, self).__init__()
+        self.op = Q.FakeQuantPerLayerGrad(num_bits=num_bits, narrow_range=narrow_range)
+
+    def construct(self, dout, x, minq, maxq):
+        return self.op(dout, x, minq, maxq)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad1():
+    # WithArgsGradient RegularRange
+    dout = np.random.uniform(-1, 1, size=[6]).astype('float32')
+    x = np.array([-0.26, -0.25, -0.24, 0.0, 63.5, 63.6]).astype(np.float32)
+    min_val = np.array([-0.125]).reshape(1).astype(np.float32)
+    max_val = np.array([63.625]).reshape(1).astype(np.float32)
+    expect = np.array([0.0, dout[1], dout[2], dout[3], dout[4], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad2():
+    # WithArgsGradient NarrowRange
+    dout = np.random.uniform(-1, 1, size=[6]).astype('float32')
+    x = np.array([-0.26, -0.25, -0.24, 0.0, 63.25, 63.3]).astype(np.float32)
+    min_val = np.array([-0.125]).reshape(1).astype(np.float32)
+    max_val = np.array([63.375]).reshape(1).astype(np.float32)
+    expect = np.array([0.0, dout[1], dout[2], dout[3], dout[4], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad3():
+    # WithArgsGradient_4Bits_RegularRange
+    dout = np.random.uniform(-1, 1, size=[6]).astype('float32')
+    x = np.array([-0.6, -0.5, -0.4, 0.0, 7.0, 7.1]).astype(np.float32)
+    min_val = np.array([-0.4]).reshape(1).astype(np.float32)
+    max_val = np.array([7.1]).reshape(1).astype(np.float32)
+    expect = np.array([0.0, dout[1], dout[2], dout[3], dout[4], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=False)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad4():
+    # WithArgsGradient_4Bits_NarrowRange
+    dout = np.random.uniform(-1, 1, size=[6]).astype('float32')
+    x = np.array([-0.6, -0.5, -0.4, 0.0, 6.5, 6.6]).astype(np.float32)
+    min_val = np.array([-0.4]).reshape(1).astype(np.float32)
+    max_val = np.array([6.6]).reshape(1).astype(np.float32)
+    expect = np.array([0.0, dout[1], dout[2], dout[3], dout[4], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=True)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad5():
+    # FakeQuantWithMinMaxVarsGradient
+    dout = np.random.uniform(-1, 1, size=[6]).astype('float32')
+    x = np.array([0.0, 0.0, 0.0, 0.0, 0.0, 0.0]).astype(np.float32)
+    min_val = np.array([0.0]).reshape(1).astype(np.float32)
+    max_val = np.array([0.0]).reshape(1).astype(np.float32)
+    expect = dout
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad6():
+    # WithVarsGradient_RegularRange
+    dout = np.random.uniform(-1, 1, size=[6]).astype('float32')
+    x = np.array([-0.26, -0.25, -0.24, 0.0, 63.5, 63.6]).astype(np.float32)
+    min_val = np.array([-0.125]).reshape(1).astype(np.float32)
+    max_val = np.array([63.625]).reshape(1).astype(np.float32)
+    expect = np.array([0.0, dout[1], dout[2], dout[3], dout[4], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=False)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad7():
+    # WithVarsGradient_NarrowRange
+    dout = np.random.uniform(-1, 1, size=[6]).astype('float32')
+    x = np.array([-0.26, -0.25, -0.24, 0.0, 63.25, 63.3]).astype(np.float32)
+    min_val = np.array([-0.125]).reshape(1).astype(np.float32)
+    max_val = np.array([63.375]).reshape(1).astype(np.float32)
+    expect = np.array([0.0, dout[1], dout[2], dout[3], dout[4], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=8, narrow_range=True)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad8():
+    # WithVarsGradient_4Bits_RegularRange
+    dout = np.random.uniform(-1, 1, size=[6]).astype('float32')
+    x = np.array([-0.6, -0.5, -0.4, 0.0, 7.0, 7.1]).astype(np.float32)
+    min_val = np.array([-0.4]).reshape(1).astype(np.float32)
+    max_val = np.array([7.1]).reshape(1).astype(np.float32)
+    expect = np.array([0.0, dout[1], dout[2], dout[3], dout[4], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=False)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)
+
+
+@pytest.mark.level0
+@pytest.mark.platform_x86_gpu_training
+@pytest.mark.env_onecard
+def test_fake_quant_grad9():
+    # WithVarsGradient_4Bits_NarrowRange
+    dout = np.random.uniform(-1, 1, size=[6]).astype('float32')
+    x = np.array([-0.6, -0.5, -0.4, 0.0, 6.5, 6.6]).astype(np.float32)
+    min_val = np.array([-0.4]).reshape(1).astype(np.float32)
+    max_val = np.array([6.6]).reshape(1).astype(np.float32)
+    expect = np.array([0.0, dout[1], dout[2], dout[3], dout[4], 0.0]).astype(np.float32)
+
+    net = Net(num_bits=4, narrow_range=True)
+    output = net(Tensor(dout), Tensor(x), Tensor(min_val), Tensor(max_val))
+
+    error = np.ones(shape=expect.shape) * 1.0e-5
+    diff = output.asnumpy().flatten() - expect
+    print("output: ", output)
+    print("expect: ", expect)
+    assert np.all(np.abs(diff) < error)