diff --git a/src/operators/activation_op.cpp b/src/operators/activation_op.cpp
index 76c9e1a014bc0e51b032d8516ba9448fa25b2aa5..d98fcb92297dd485fc3e59cfe592e00672f4ffca 100644
--- a/src/operators/activation_op.cpp
+++ b/src/operators/activation_op.cpp
@@ -58,6 +58,7 @@ REGISTER_OPERATOR_CPU(relu6, ops::Relu6Op);
 REGISTER_OPERATOR_MALI_GPU(relu, ops::ReluOp);
 #endif
 #ifdef PADDLE_MOBILE_FPGA
+REGISTER_OPERATOR_FPGA(relu, ops::ReluOp);
 #endif
 #ifdef PADDLE_MOBILE_CL
 REGISTER_OPERATOR_CL(relu, ops::ReluOp);
diff --git a/src/operators/kernel/fpga/V1/relu_kernel.cpp b/src/operators/kernel/fpga/V1/relu_kernel.cpp
index 3d72aedba6113657ed3b4248602c50f4d5ef5e41..6fff10f6206212379e865f2041e3d35cca955bfd 100644
--- a/src/operators/kernel/fpga/V1/relu_kernel.cpp
+++ b/src/operators/kernel/fpga/V1/relu_kernel.cpp
@@ -14,7 +14,7 @@ limitations under the License. */
 
 #ifdef RELU_OP
 
-#include "operators/kernel/relu_kernel.h"
+#include "operators/kernel/activation_kernel.h"
 
 namespace paddle_mobile {
 namespace operators {
diff --git a/src/operators/kernel/relu_kernel.h b/src/operators/kernel/relu_kernel.h
deleted file mode 100644
index ee279ff21b6a2e7f63250d2fe376e953ea7835f5..0000000000000000000000000000000000000000
--- a/src/operators/kernel/relu_kernel.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* 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. */
-
-#include "framework/operator.h"
-#include "operators/op_param.h"
-
-#pragma once
-
-namespace paddle_mobile {
-namespace operators {
-
-template <typename DeviceType, typename T>
-class ReluKernel
-    : public framework::OpKernelBase<DeviceType, ReluParam<DeviceType>> {
- public:
-  void Compute(const ReluParam<DeviceType>& param);
-  bool Init(ReluParam<DeviceType>* param);
-};
-}  // namespace operators
-}  // namespace paddle_mobile
diff --git a/src/operators/relu_op.cpp b/src/operators/relu_op.cpp
deleted file mode 100644
index c51f625f8179a2b608259b2c2d1016be600eda8a..0000000000000000000000000000000000000000
--- a/src/operators/relu_op.cpp
+++ /dev/null
@@ -1,45 +0,0 @@
-/* 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 RELU_OP
-
-#include "operators/relu_op.h"
-namespace paddle_mobile {
-namespace operators {
-
-template <typename Dtype, typename T>
-void ReluOp<Dtype, T>::InferShape() const {
-  auto input_dims = this->param_.InputX()->dims();
-  this->param_.Out()->Resize(input_dims);
-}
-
-}  // namespace operators
-}  // namespace paddle_mobile
-
-/*
- * @b 每一个 op 都需要注册一下的,
- *    USE_OP的参数 和 REGISTER_OPERATOR的第一个参数
- * 都是需要和model中类型对应起来的
- * */
-namespace ops = paddle_mobile::operators;
-#ifdef PADDLE_MOBILE_CPU
-REGISTER_OPERATOR_CPU(relu, ops::ReluOp);
-#endif
-#ifdef PADDLE_MOBILE_MALI_GPU
-REGISTER_OPERATOR_MALI_GPU(relu, ops::ReluOp);
-#endif
-#ifdef PADDLE_MOBILE_FPGA
-REGISTER_OPERATOR_FPGA(relu, ops::ReluOp);
-#endif
-#endif
diff --git a/src/operators/relu_op.h b/src/operators/relu_op.h
deleted file mode 100644
index da6e2b5d2275c5d48881de70f24552c62adf3821..0000000000000000000000000000000000000000
--- a/src/operators/relu_op.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/* 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 RELU_OP
-
-#pragma once
-
-#include <string>
-
-#include "framework/operator.h"
-#include "operators/kernel/relu_kernel.h"
-#include "operators/op_param.h"
-
-namespace paddle_mobile {
-namespace operators {
-
-using paddle_mobile::framework::Tensor;
-
-template <typename DeviceType, typename T>
-class ReluOp : public framework::OperatorWithKernel<
-                   DeviceType, ReluParam<DeviceType>,
-                   operators::ReluKernel<DeviceType, T>> {
- public:
-  ReluOp(const std::string &type, const VariableNameMap &inputs,
-         const VariableNameMap &outputs, const framework::AttributeMap &attrs,
-         std::shared_ptr<framework::Scope> scope)
-      : framework::OperatorWithKernel<DeviceType, ReluParam<DeviceType>,
-                                      operators::ReluKernel<DeviceType, T>>(
-            type, inputs, outputs, attrs, scope) {}
-  void InferShape() const override;
-
- protected:
-};
-
-}  // namespace operators
-}  // namespace paddle_mobile
-
-#endif