diff --git a/paddle/fluid/inference/tensorrt/convert/swish_op.cc b/paddle/fluid/inference/tensorrt/convert/swish_op.cc
index b2e394d14eba23f025cf3f729fa0c815231110f5..0df5c013d34d4206e4d286a981841992241b2b0c 100644
--- a/paddle/fluid/inference/tensorrt/convert/swish_op.cc
+++ b/paddle/fluid/inference/tensorrt/convert/swish_op.cc
@@ -75,7 +75,7 @@ class SwishOpConverter : public OpConverter {
       bool with_fp16 =
           engine_->WithFp16() && !engine_->disable_trt_plugin_fp16();
       plugin::SwishPlugin* plugin = new plugin::SwishPlugin(beta, with_fp16);
-      layer = engine_->AddPlugin(&input, input_num, plugin);
+      layer = engine_->AddPluginV2Ext(&input, input_num, plugin);
     }
 
     auto output_name = op_desc.Output("Out")[0];
diff --git a/paddle/fluid/inference/tensorrt/plugin/swish_op_plugin.cu b/paddle/fluid/inference/tensorrt/plugin/swish_op_plugin.cu
index 9720719fd0bca0b4dfb12a4b267c1e139461d5c7..2c2fad74b9a2d98a0bf292593860cb47ddda9099 100644
--- a/paddle/fluid/inference/tensorrt/plugin/swish_op_plugin.cu
+++ b/paddle/fluid/inference/tensorrt/plugin/swish_op_plugin.cu
@@ -24,6 +24,16 @@ namespace tensorrt {
 namespace plugin {
 
 int SwishPlugin::initialize() TRT_NOEXCEPT { return 0; }
+void SwishPlugin::terminate() TRT_NOEXCEPT {}
+
+bool SwishPlugin::supportsFormat(
+    nvinfer1::DataType type, nvinfer1::PluginFormat format) const TRT_NOEXCEPT {
+  if (with_fp16_) {
+    return type == nvinfer1::DataType::kFLOAT ||
+           type == nvinfer1::DataType::kHALF;
+  }
+  return type == nvinfer1::DataType::kFLOAT;
+}
 
 nvinfer1::Dims SwishPlugin::getOutputDimensions(int index,
                                                 const nvinfer1::Dims *inputDims,
@@ -85,17 +95,29 @@ int SwishPlugin::enqueue(int batch_size, const void *const *inputs,
                          void *const *outputs, void *workspace,
                          cudaStream_t stream) TRT_NOEXCEPT {
 #endif
-  // input dims is CHW.
   const auto &input_dims = this->getInputDims(0);
-  const float *input = reinterpret_cast<const float *>(inputs[0]);
-  float *output = reinterpret_cast<float *const *>(outputs)[0];
   int num = batch_size;
   for (int i = 0; i < input_dims.nbDims; i++) {
     num *= input_dims.d[i];
   }
   int threads = 1024;
   int blocks = (num + threads - 1) / threads;
-  swish_kernel<<<blocks, threads, 0, stream>>>(num, input, output, beta_);
+  auto type = getDataType();
+  if (type == nvinfer1::DataType::kFLOAT) {
+    VLOG(1) << "TRT Plugin DataType selected. Swish-->fp32";
+    const float *input = reinterpret_cast<const float *>(inputs[0]);
+    float *output = reinterpret_cast<float *const *>(outputs)[0];
+    swish_kernel<<<blocks, threads, 0, stream>>>(num, input, output, beta_);
+  } else if (type == nvinfer1::DataType::kHALF) {
+    VLOG(1) << "TRT Plugin DataType selected. Swish-->fp16";
+    const half *input = reinterpret_cast<const half *>(inputs[0]);
+    half *output = reinterpret_cast<half *const *>(outputs)[0];
+    swish_kernel<<<blocks, threads, 0, stream>>>(num, input, output,
+                                                 (half)beta_);
+  } else {
+    PADDLE_THROW(platform::errors::InvalidArgument(
+        "The Swish TRT Plugin's input type should be float or half."));
+  }
 
   return cudaGetLastError() != cudaSuccess;
 }
@@ -140,12 +162,15 @@ bool SwishPluginDynamic::supportsFormatCombination(
   const nvinfer1::PluginTensorDesc &in = in_out[pos];
   if (pos == 0) {
     if (with_fp16_) {
-      return (in.type == nvinfer1::DataType::kFLOAT ||
-              in.type == nvinfer1::DataType::kHALF) &&
-             (in.format == nvinfer1::TensorFormat::kLINEAR);
+      bool res = (in.type == nvinfer1::DataType::kFLOAT ||
+                  in.type == nvinfer1::DataType::kHALF);
+// encounter trt crash bug
+#if IS_TRT_VERSION_LT(8000)
+      res = res && (in.format == nvinfer1::TensorFormat::kLINEAR);
+#endif
+      return res;
     } else {
-      return (in.type == nvinfer1::DataType::kFLOAT) &&
-             (in.format == nvinfer1::TensorFormat::kLINEAR);
+      return in.type == nvinfer1::DataType::kFLOAT;
     }
   }
   const nvinfer1::PluginTensorDesc &prev = in_out[pos - 1];
diff --git a/paddle/fluid/inference/tensorrt/plugin/swish_op_plugin.h b/paddle/fluid/inference/tensorrt/plugin/swish_op_plugin.h
index c4bdc5f921509cee284140061d5e4b14a55939b2..aa8fdce23fa89e331eb5c5da7bc3c4fe078cc1fb 100644
--- a/paddle/fluid/inference/tensorrt/plugin/swish_op_plugin.h
+++ b/paddle/fluid/inference/tensorrt/plugin/swish_op_plugin.h
@@ -26,7 +26,7 @@ namespace inference {
 namespace tensorrt {
 namespace plugin {
 
-class SwishPlugin : public PluginTensorRT {
+class SwishPlugin : public PluginTensorRTV2Ext {
  private:
   float beta_;
 
@@ -55,13 +55,24 @@ class SwishPlugin : public PluginTensorRT {
 
   int initialize() TRT_NOEXCEPT override;
 
-  SwishPlugin* clone() const TRT_NOEXCEPT override {
-    return new SwishPlugin(beta_, with_fp16_);
+  nvinfer1::IPluginV2Ext* clone() const TRT_NOEXCEPT override {
+    auto* plugin = new SwishPlugin(beta_, with_fp16_);
+    plugin->data_format_ = data_format_;
+    plugin->data_type_ = data_type_;
+    plugin->input_dims_ = input_dims_;
+    return plugin;
   }
 
   const char* getPluginType() const TRT_NOEXCEPT override {
     return "swish_plugin";
   }
+
+  nvinfer1::DataType getOutputDataType(
+      int index, const nvinfer1::DataType* input_types,
+      int nb_inputs) const TRT_NOEXCEPT override {
+    return input_types[0];
+  }
+
   int getNbOutputs() const TRT_NOEXCEPT override { return 1; }
   nvinfer1::Dims getOutputDimensions(int index, const nvinfer1::Dims* inputs,
                                      int nbInputDims) TRT_NOEXCEPT override;
@@ -71,6 +82,12 @@ class SwishPlugin : public PluginTensorRT {
   int enqueue(int batchSize, const void* const* inputs, void* const* outputs,
 #endif
               void* workspace, cudaStream_t stream) TRT_NOEXCEPT override;
+
+  void terminate() TRT_NOEXCEPT override;
+  void destroy() TRT_NOEXCEPT override { delete this; }
+  const char* getPluginVersion() const TRT_NOEXCEPT override { return "2"; }
+  bool supportsFormat(nvinfer1::DataType type, nvinfer1::PluginFormat format)
+      const TRT_NOEXCEPT override;
 };
 
 class SwishPluginCreator : public TensorRTPluginCreator {
@@ -79,7 +96,7 @@ class SwishPluginCreator : public TensorRTPluginCreator {
     return "swish_plugin";
   }
 
-  const char* getPluginVersion() const TRT_NOEXCEPT override { return "1"; }
+  const char* getPluginVersion() const TRT_NOEXCEPT override { return "2"; }
 
   nvinfer1::IPluginV2* deserializePlugin(
       const char* name, const void* serial_data,