diff --git a/src/operators/elementwise_sub_op.cpp b/src/operators/elementwise_sub_op.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..e5ec33ced29f02a524350ed907ef69f2a5dbfca8
--- /dev/null
+++ b/src/operators/elementwise_sub_op.cpp
@@ -0,0 +1,41 @@
+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+
+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. */
+
+#ifdef ELEMENTWISESUB_OP
+
+#include "operators/elementwise_sub_op.h"
+
+namespace paddle_mobile {
+namespace operators {
+
+template <typename Dtype, typename T>
+void ElementwiseSubOp<Dtype, T>::InferShape() const {
+  auto x_dim = this->param_.InputX()->dims();
+  this->param_.Out()->Resize(x_dim);
+}
+
+}  // namespace operators
+}  // namespace paddle_mobile
+
+namespace ops = paddle_mobile::operators;
+#ifdef PADDLE_MOBILE_CPU
+REGISTER_OPERATOR_CPU(elementwise_sub, ops::ElementwiseSubOp);
+#endif
+#ifdef PADDLE_MOBILE_MALI_GPU
+REGISTER_OPERATOR_MALI_GPU(elementwise_sub, ops::ElementwiseSubOp);
+#endif
+#ifdef PADDLE_MOBILE_FPGA
+#endif
+
+#endif
diff --git a/src/operators/elementwise_sub_op.h b/src/operators/elementwise_sub_op.h
new file mode 100644
index 0000000000000000000000000000000000000000..2edd2581a9d3929a29459df60f514132796a53e2
--- /dev/null
+++ b/src/operators/elementwise_sub_op.h
@@ -0,0 +1,51 @@
+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+
+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. */
+
+#ifdef ELEMENTWISESUB_OP
+
+#pragma once
+
+#include <string>
+#include "framework/operator.h"
+#include "kernel/elementwise_sub_kernel.h"
+#include "operators/op_param.h"
+
+namespace paddle_mobile {
+namespace operators {
+using std::string;
+template <typename DeviceType, typename T>
+class ElementwiseSubOp : public framework::OperatorWithKernel<
+                             DeviceType, ElementwiseSubParam<DeviceType>,
+                             operators::ElementwiseSubKernel<DeviceType, T>> {
+ public:
+  ElementwiseSubOp(const string &type, const VariableNameMap &inputs,
+                   const VariableNameMap &outputs,
+                   const framework::AttributeMap &attrs,
+                   std::shared_ptr<framework::Scope> scope)
+      : framework::OperatorWithKernel<
+            DeviceType, ElementwiseSubParam<DeviceType>,
+            operators::ElementwiseSubKernel<DeviceType, T>>(
+            type, inputs, outputs, attrs, scope) {}
+
+  using framework::OperatorWithKernel<
+      DeviceType, ElementwiseSubParam<DeviceType>,
+      operators::ElementwiseSubKernel<DeviceType, T>>::OperatorWithKernel;
+  void InferShape() const override;
+
+ protected:
+};
+}  // namespace operators
+}  // namespace paddle_mobile
+
+#endif
diff --git a/src/operators/kernel/arm/elementwise_sub_kernel.cpp b/src/operators/kernel/arm/elementwise_sub_kernel.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..d78b3e31098ef7ef929a0d2c00043fab7193b01c
--- /dev/null
+++ b/src/operators/kernel/arm/elementwise_sub_kernel.cpp
@@ -0,0 +1,38 @@
+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+
+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. */
+
+#ifdef ELEMENTWISESUB_OP
+
+#include "operators/kernel/elementwise_sub_kernel.h"
+#include "operators/kernel/central-arm-func/elementwise_sub_arm_func.h"
+
+namespace paddle_mobile {
+namespace operators {
+
+template <>
+bool ElementwiseSubKernel<CPU, float>::Init(ElementwiseSubParam<CPU> *param) {
+  return true;
+}
+
+template <>
+void ElementwiseSubKernel<CPU, float>::Compute(
+    const ElementwiseSubParam<CPU> &param) const {
+  ElementwiseSubCompute<float>(param);
+  param.Out()->set_lod(param.InputX()->lod());
+}
+
+}  // namespace operators
+}  // namespace paddle_mobile
+
+#endif
diff --git a/src/operators/kernel/central-arm-func/elementwise_sub_arm_func.h b/src/operators/kernel/central-arm-func/elementwise_sub_arm_func.h
new file mode 100644
index 0000000000000000000000000000000000000000..663c65c83a0f5b76e292925ea8cb0994b0f99ad1
--- /dev/null
+++ b/src/operators/kernel/central-arm-func/elementwise_sub_arm_func.h
@@ -0,0 +1,45 @@
+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+
+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. */
+
+#ifdef ELEMENTWISESUB_OP
+
+#pragma once
+#include "operators/math/elementwise_op_function.h"
+#include "operators/op_param.h"
+
+namespace paddle_mobile {
+namespace operators {
+
+template <typename T>
+struct SubFunctor {
+  inline T operator()(T a, T b) const { return a - b; }
+};
+
+template <typename P>
+void ElementwiseSubCompute(const ElementwiseSubParam<CPU> &param) {
+  const Tensor *input_x = param.InputX();
+  const Tensor *input_y = param.InputY();
+  Tensor *Out = param.Out();
+  Out->mutable_data<float>();
+  int axis = param.Axis();
+  ElementwiseComputeEx<SubFunctor<float>, float>(input_x, input_y, axis,
+                                                 SubFunctor<float>(), Out);
+}
+
+template class ElementwiseSubKernel<CPU, float>;
+
+}  // namespace operators
+}  // namespace paddle_mobile
+
+#endif
diff --git a/src/operators/kernel/elementwise_sub_kernel.h b/src/operators/kernel/elementwise_sub_kernel.h
new file mode 100644
index 0000000000000000000000000000000000000000..9516dcbd3de09debe233571eb5f60b3b8b19a2fa
--- /dev/null
+++ b/src/operators/kernel/elementwise_sub_kernel.h
@@ -0,0 +1,38 @@
+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+
+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. */
+
+#ifdef ELEMENTWISEADD_OP
+
+#pragma once
+
+#include "framework/operator.h"
+#include "operators/math/elementwise_op_function.h"
+#include "operators/op_param.h"
+
+namespace paddle_mobile {
+namespace operators {
+
+template <typename DeviceType, typename T>
+class ElementwiseSubKernel
+    : public framework::OpKernelBase<DeviceType,
+                                     ElementwiseSubParam<DeviceType>> {
+ public:
+  void Compute(const ElementwiseSubParam<DeviceType> &param) const;
+  bool Init(ElementwiseSubParam<DeviceType> *param);
+};
+
+}  // namespace operators
+}  // namespace paddle_mobile
+
+#endif
diff --git a/src/operators/op_param.h b/src/operators/op_param.h
index 27ab4629f011ba25390961b2679fd8f86d213fc3..f4b2696b4ea2753a900b83bd1530d6ba6ea9075f 100644
--- a/src/operators/op_param.h
+++ b/src/operators/op_param.h
@@ -488,6 +488,36 @@ template <typename Dtype>
 using ElementwiseAddReluParam = ElementwiseAddParam<Dtype>;
 #endif
 
+template <typename Dtype>
+class ElementwiseSubParam : OpParam {
+  typedef typename DtypeTensorTrait<Dtype>::gtype GType;
+  typedef typename DtypeTensorTrait<Dtype>::rtype RType;
+
+ public:
+  ElementwiseSubParam(const VariableNameMap &inputs,
+                      const VariableNameMap &outputs, const AttributeMap &attrs,
+                      const Scope &scope) {
+    input_x_ = InputXFrom<GType>(inputs, scope);
+    input_y_ = InputYFrom<GType>(inputs, scope);
+    out_ = OutFrom<GType>(outputs, scope);
+    axis_ = GetAttr<int>("axis", attrs);
+  }
+
+  const GType *InputX() const { return input_x_; }
+
+  const GType *InputY() const { return input_y_; }
+
+  GType *Out() const { return out_; }
+
+  const int &Axis() const { return axis_; }
+
+ private:
+  GType *input_x_;
+  GType *input_y_;
+  GType *out_;
+  int axis_;
+};
+
 #ifdef MUL_OP
 template <typename Dtype>
 class MulParam : OpParam {
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index ad3b2e5fe95abbec76380af3addca7b769ba3e34..1893491f1163c42784af1213b6581ae7817f86b2 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -173,6 +173,14 @@ if (NOT FOUND_MATCH)
     target_link_libraries(test-elementwiseadd-op paddle-mobile)
 
     # gen test
+    ADD_EXECUTABLE(test-elementwisesub-op operators/test_elementwise_sub_op.cpp test_helper.h test_include.h)
+    target_link_libraries(test-elementwisesub-op paddle-mobile)
+
+    # gen test
+    ADD_EXECUTABLE(test-im2sequence-op operators/test_im2sequence_op.cpp test_helper.h test_include.h)
+    target_link_libraries(test-im2sequence-op paddle-mobile)
+
+	# gen test
     ADD_EXECUTABLE(test-concat-op operators/test_concat_op.cpp test_helper.h test_include.h)
     target_link_libraries(test-concat-op paddle-mobile)
 
diff --git a/test/operators/test_elementwise_sub_op.cpp b/test/operators/test_elementwise_sub_op.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..cfac83eff7a012d52d47f96e088bd8519603cadc
--- /dev/null
+++ b/test/operators/test_elementwise_sub_op.cpp
@@ -0,0 +1,159 @@
+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+
+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. */
+
+#pragma once
+
+#include "../test_helper.h"
+#include "../test_include.h"
+#include "operators/elementwise_sub_op.h"
+
+namespace paddle_mobile {
+namespace framework {
+
+template <typename Dtype>
+class TestElementwiseSubOp {
+ public:
+  explicit TestElementwiseSubOp(const Program<Dtype> p) : program_(p) {
+    if (use_optimize_) {
+      to_predict_program_ = program_.optimizeProgram;
+    } else {
+      to_predict_program_ = program_.originProgram;
+    }
+
+    const std::vector<std::shared_ptr<BlockDesc>> blocks =
+        to_predict_program_->Blocks();
+    //  DLOG << " **block size " << blocks.size();
+    for (int i = 0; i < blocks.size(); ++i) {
+      std::shared_ptr<BlockDesc> block_desc = blocks[i];
+      std::vector<std::shared_ptr<OpDesc>> ops = block_desc->Ops();
+      //    DLOG << " ops " << ops.size();
+      for (int j = 0; j < ops.size(); ++j) {
+        std::shared_ptr<OpDesc> op = ops[j];
+        if (op->Type() == "elementwise_sub" &&
+            op->Input("X")[0] == "sigmoid_1.tmp_0") {
+          DLOG << " elementwise_sub attr size: " << op->GetAttrMap().size();
+          DLOG << " inputs size: " << op->GetInputs().size();
+          DLOG << " outputs size: " << op->GetOutputs().size();
+
+          std::shared_ptr<operators::ElementwiseSubOp<Dtype, float>> lrn =
+              std::make_shared<operators::ElementwiseSubOp<Dtype, float>>(
+                  op->Type(), op->GetInputs(), op->GetOutputs(),
+                  op->GetAttrMap(), program_.scope);
+          ops_of_block_[*block_desc.get()].push_back(lrn);
+        }
+      }
+    }
+  }
+
+  std::shared_ptr<Tensor> predict_bn(const Tensor &t1, const Tensor &t2) {
+    // feed
+    auto scope = program_.scope;
+    Variable *x1_feed_value = scope->Var("tmp_0");
+    auto tensor_x1 = x1_feed_value->GetMutable<LoDTensor>();
+    tensor_x1->ShareDataWith(t1);
+
+    Variable *x2_feed_value = scope->Var("sigmoid_1.tmp_0");
+    auto tensor_x2 = x2_feed_value->GetMutable<LoDTensor>();
+    tensor_x2->ShareDataWith(t2);
+
+    Variable *output = scope->Var("tmp_1");
+    auto *output_tensor = output->GetMutable<LoDTensor>();
+    output_tensor->mutable_data<float>({1, 1, 6, 6});
+    //  DLOG << typeid(output_tensor).name();
+    //  DLOG << "output_tensor dims: " << output_tensor->dims();
+
+    std::shared_ptr<Tensor> out_tensor = std::make_shared<LoDTensor>();
+    out_tensor.reset(output_tensor);
+
+    predict_bn(t1, t2, 0);
+    return out_tensor;
+  }
+
+ private:
+  const framework::Program<Dtype> program_;
+  std::shared_ptr<ProgramDesc> to_predict_program_;
+  std::map<framework::BlockDesc,
+           std::vector<std::shared_ptr<OperatorBase<Dtype>>>>
+      ops_of_block_;
+  bool use_optimize_ = false;
+
+  void predict_bn(const Tensor &t1, const Tensor &t2, int block_id) {
+    std::shared_ptr<BlockDesc> to_predict_block =
+        to_predict_program_->Block(block_id);
+    for (int j = 0; j < ops_of_block_[*to_predict_block.get()].size(); ++j) {
+      auto op = ops_of_block_[*to_predict_block.get()][j];
+      DLOG << "op -> run()";
+      op->Run();
+    }
+  }
+};
+
+template class TestElementwiseSubOp<CPU>;
+}  // namespace framework
+}  // namespace paddle_mobile
+
+int main() {
+  DLOG << "----------**********----------";
+  DLOG << "begin to run ElementwiseSub Test";
+  paddle_mobile::Loader<paddle_mobile::CPU> loader;
+  auto program = loader.Load(std::string(g_ocr) + "/model",
+                             std::string(g_ocr) + "/params");
+
+  /// input x1 (1,1,6,6)
+  paddle_mobile::framework::Tensor inputx1;
+  SetupTensor<float>(&inputx1, {1, 1, 6, 6}, static_cast<float>(0),
+                     static_cast<float>(1));
+  auto *inputx1_ptr = inputx1.data<float>();
+
+  /// input x2 (1,1,6,6)
+  paddle_mobile::framework::Tensor inputx2;
+  SetupTensor<float>(&inputx2, {1, 1, 6, 6}, static_cast<float>(0),
+                     static_cast<float>(1));
+  auto *inputx2_ptr = inputx2.data<float>();
+
+  paddle_mobile::framework::TestElementwiseSubOp<paddle_mobile::CPU>
+      testElementwiseSubOp(program);
+
+  auto output_op = testElementwiseSubOp.predict_bn(inputx1, inputx2);
+  auto *output_op_ptr = output_op->data<float>();
+
+  auto inputx1_dim = inputx1.numel() / inputx1.dims()[0];
+  DLOG << " input1 : ";
+  for (int i = 0; i < inputx1.dims()[0]; ++i) {
+    for (int j = 0; j < inputx1_dim; ++j) {
+      DLOGF("%f ", inputx1_ptr[i * inputx1_dim + j]);
+    }
+    DLOGF("\n");
+  }
+
+  auto inputx2_dim = inputx2.numel() / inputx2.dims()[0];
+  DLOG << " input2 : ";
+  for (int i = 0; i < inputx2.dims()[0]; ++i) {
+    for (int j = 0; j < inputx2_dim; ++j) {
+      DLOGF("%f ", inputx2_ptr[i * inputx2_dim + j]);
+    }
+    DLOGF("\n");
+  }
+
+  auto output_dim = output_op->numel() / output_op->dims()[0];
+  DLOG << " output : ";
+  for (int i = 0; i < output_op->dims()[0]; ++i) {
+    for (int j = 0; j < output_dim; ++j) {
+      DLOGF("%f ", output_op_ptr[i * output_dim + j]);
+    }
+    DLOGF("\n");
+  }
+
+  return 0;
+}
diff --git a/test/operators/test_im2sequence_op.cpp b/test/operators/test_im2sequence_op.cpp
index a7512d3bf3cffcb100fe292e50fc7b7b23fa0aa0..b45e437e12f95cd9f7050247fc03a152246d8122 100644
--- a/test/operators/test_im2sequence_op.cpp
+++ b/test/operators/test_im2sequence_op.cpp
@@ -12,51 +12,129 @@ 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. */
 
-#include "../executor_for_test.h"
+#pragma once
+
+#include "../test_helper.h"
 #include "../test_include.h"
 #include "operators/im2sequence_op.h"
 
-int main() {
-  paddle_mobile::Loader<paddle_mobile::CPU> loader;
-  auto program = loader.Load(g_ocr_recg);
-  PADDLE_MOBILE_ENFORCE(program.originProgram != nullptr,
-                        "program file read fail");
+namespace paddle_mobile {
+namespace framework {
 
-  Executor4Test<paddle_mobile::CPU,
-                paddle_mobile::operators::ReluOp<paddle_mobile::CPU, float>>
-      executor(program, "im2sequence");
+template <typename Dtype>
+class TestIm2SequenceOp {
+ public:
+  explicit TestIm2SequenceOp(const Program<Dtype> p) : program_(p) {
+    if (use_optimize_) {
+      to_predict_program_ = program_.optimizeProgram;
+    } else {
+      to_predict_program_ = program_.originProgram;
+    }
 
-  // 1. input_tensors;
-  vector<Tensor> input_tensors;
+    const std::vector<std::shared_ptr<BlockDesc>> blocks =
+        to_predict_program_->Blocks();
+    //  DLOG << " **block size " << blocks.size();
+    for (int i = 0; i < blocks.size(); ++i) {
+      std::shared_ptr<BlockDesc> block_desc = blocks[i];
+      std::vector<std::shared_ptr<OpDesc>> ops = block_desc->Ops();
+      //    DLOG << " ops " << ops.size();
+      for (int j = 0; j < ops.size(); ++j) {
+        std::shared_ptr<OpDesc> op = ops[j];
+        if (op->Type() == "im2sequence" &&
+            op->Input("X")[0] == "conv2d_19.tmp_1") {
+          DLOG << " im2squence attr size: " << op->GetAttrMap().size();
+          DLOG << " inputs size: " << op->GetInputs().size();
+          DLOG << " outputs size: " << op->GetOutputs().size();
 
-  Tensor input1;
-  auto input1_data = CreateInput<float>(&input1, {2, 2, 3, 3}, -1, 1);
-  input_tensors.push_back(input1);
+          std::shared_ptr<operators::Im2SequenceOp<Dtype, float>> lrn =
+              std::make_shared<operators::Im2SequenceOp<Dtype, float>>(
+                  op->Type(), op->GetInputs(), op->GetOutputs(),
+                  op->GetAttrMap(), program_.scope);
+          ops_of_block_[*block_desc.get()].push_back(lrn);
+        }
+      }
+    }
+  }
 
-  // 2. input_names
-  vector<string> input_names({
-      "conv2d_19.tmp_1",
-  });
+  std::shared_ptr<Tensor> predict_bn(const Tensor &t1) {
+    // feed
+    auto scope = program_.scope;
+    Variable *x1_feed_value = scope->Var("conv2d_19.tmp_1");
+    auto tensor_x1 = x1_feed_value->GetMutable<LoDTensor>();
+    tensor_x1->ShareDataWith(t1);
 
-  // 3. output_names
-  vector<string> output_names({"im2sequence_0.tmp_0"});
+    Variable *output = scope->Var("im2sequence_0.tmp_0");
+    auto *output_tensor = output->GetMutable<LoDTensor>();
+    output_tensor->mutable_data<float>({2, 12});
+    //  DLOG << typeid(output_tensor).name();
+    //  DLOG << "output_tensor dims: " << output_tensor->dims();
 
-  // 4. out_dims;
-  vector<DDim> out_ddims;
-  auto out_ddim = paddle_mobile::framework::make_ddim({8, 9});
-  out_ddims.push_back(out_ddim);
+    std::shared_ptr<Tensor> out_tensor = std::make_shared<LoDTensor>();
+    out_tensor.reset(output_tensor);
 
-  auto output = executor.Predict<LoDTensor>(input_tensors, input_names,
-                                            output_names, out_ddims);
+    predict_bn(t1, 0);
+    return out_tensor;
+  }
 
-  auto output0_data = output[0]->data<float>();
+ private:
+  const framework::Program<Dtype> program_;
+  std::shared_ptr<ProgramDesc> to_predict_program_;
+  std::map<framework::BlockDesc,
+           std::vector<std::shared_ptr<OperatorBase<Dtype>>>>
+      ops_of_block_;
+  bool use_optimize_ = false;
 
-  for (int j = 0; j < input_tensors[0].numel(); ++j) {
-    DLOG << " value of input: " << input1_data[j];
+  void predict_bn(const Tensor &t1, int block_id) {
+    std::shared_ptr<BlockDesc> to_predict_block =
+        to_predict_program_->Block(block_id);
+    for (int j = 0; j < ops_of_block_[*to_predict_block.get()].size(); ++j) {
+      auto op = ops_of_block_[*to_predict_block.get()][j];
+      DLOG << "op -> run()";
+      op->Run();
+    }
   }
+};
+
+template class TestIm2SequenceOp<CPU>;
+}  // namespace framework
+}  // namespace paddle_mobile
 
-  for (int j = 0; j < output[0]->numel(); ++j) {
-    DLOG << " value of output: " << output0_data[j];
+int main() {
+  DLOG << "----------**********----------";
+  DLOG << "begin to run Im2Sequence Test";
+  paddle_mobile::Loader<paddle_mobile::CPU> loader;
+  auto program = loader.Load(std::string(g_eng) + "/model",
+                             std::string(g_eng) + "/params");
+
+  /// input x (4,10,2,2)
+  paddle_mobile::framework::Tensor inputx;
+  SetupTensor<float>(&inputx, {1, 2, 6, 2}, static_cast<float>(0),
+                     static_cast<float>(1));
+  auto *inputx_ptr = inputx.data<float>();
+
+  paddle_mobile::framework::TestIm2SequenceOp<paddle_mobile::CPU>
+      testIm2SequenceOp(program);
+
+  auto output_op = testIm2SequenceOp.predict_bn(inputx);
+  auto *output_op_ptr = output_op->data<float>();
+
+  auto input_dim = inputx.numel() / inputx.dims()[0];
+  DLOG << " input : ";
+  for (int i = 0; i < inputx.dims()[0]; ++i) {
+    for (int j = 0; j < input_dim; ++j) {
+      DLOGF("%f ", inputx_ptr[i * input_dim + j]);
+    }
+    DLOGF("\n");
   }
+
+  auto output_dim = output_op->numel() / output_op->dims()[0];
+  DLOG << " output : ";
+  for (int i = 0; i < output_op->dims()[0]; ++i) {
+    for (int j = 0; j < output_dim; ++j) {
+      DLOGF("%f ", output_op_ptr[i * output_dim + j]);
+    }
+    DLOGF("\n");
+  }
+
   return 0;
 }
diff --git a/tools/op.cmake b/tools/op.cmake
index 5d5567a524ae69bfb4668ff6078621eb4cb5920d..d0953f2bb655a6fd6be47c830d63b518b76780c3 100644
--- a/tools/op.cmake
+++ b/tools/op.cmake
@@ -188,6 +188,8 @@ if(NOT FOUND_MATCH)
   set(CONV_OP ON)
   set(DEPTHWISECONV_OP ON)
   set(ELEMENTWISEADD_OP ON)
+  set(ELEMENTWISESUB_OP ON)
+  set(IM2SEQUENCE_OP ON)
   set(FUSION_CONVADD_OP ON)
   set(FUSION_CONVADDPRELU_OP ON)
   set(FUSION_CONVADDRELU_OP ON)
@@ -263,6 +265,9 @@ endif()
 if (ELEMENTWISEADD_OP)
   add_definitions(-DELEMENTWISEADD_OP)
 endif()
+if (ELEMENTWISESUB_OP)
+  add_definitions(-DELEMENTWISESUB_OP)
+endif()
 if (FUSION_CONVADD_OP)
   add_definitions(-DFUSION_CONVADD_OP)
 endif()