diff --git a/paddle/operators/add_op.cc b/paddle/operators/add_op.cc
index 64f856ac6f0e2bd4782cc670cbf68ab5a9ac9205..086245ef62d759ab20a3684ddbc015f6c6258639 100644
--- a/paddle/operators/add_op.cc
+++ b/paddle/operators/add_op.cc
@@ -57,5 +57,6 @@ class AddOpGrad : public framework::OperatorWithKernel {
 namespace ops = paddle::operators;
 REGISTER_OP(add_two, ops::AddOp, ops::AddOpMaker);
 REGISTER_GRADIENT_OP(add_two, add_two_grad, ops::AddOpGrad);
+
 REGISTER_OP_CPU_KERNEL(add_two,
                        ops::AddKernel<paddle::platform::CPUPlace, float>);
diff --git a/paddle/operators/add_op_test.cc b/paddle/operators/add_op_test.cc
index 4f33f46bb21291a5a2048e809398b575b1731ffe..bf529defb20d27200a28666278db8607b986e2d5 100644
--- a/paddle/operators/add_op_test.cc
+++ b/paddle/operators/add_op_test.cc
@@ -17,7 +17,6 @@ limitations under the License. */
 #include "paddle/framework/op_registry.h"
 
 USE_OP(add_two);
-// USE_OP(add_two_grad);
 
 TEST(AddOp, GetOpProto) {
   auto& protos = paddle::framework::OpRegistry::protos();
diff --git a/paddle/operators/cross_entropy_op.cc b/paddle/operators/cross_entropy_op.cc
index 7c03fbd9e9ed295e2b71d80ca533645d250f2244..c813d54e17fa48aa4447ef76b918b7355be52b09 100644
--- a/paddle/operators/cross_entropy_op.cc
+++ b/paddle/operators/cross_entropy_op.cc
@@ -70,8 +70,9 @@ OnehotCrossEntropy Operator.
 namespace ops = paddle::operators;
 REGISTER_OP(onehot_cross_entropy, ops::OnehotCrossEntropyOp,
             ops::OnehotCrossEntropyOpMaker);
-REGISTER_OP_CPU_KERNEL(onehot_cross_entropy,
-                       ops::OnehotCrossEntropyOpKernel<paddle::platform::CPUPlace, float>);
+REGISTER_OP_CPU_KERNEL(
+    onehot_cross_entropy,
+    ops::OnehotCrossEntropyOpKernel<paddle::platform::CPUPlace, float>);
 REGISTER_GRADIENT_OP(onehot_cross_entropy, onehot_cross_entropy_grad,
                      ops::OnehotCrossEntropyGradientOp);
 REGISTER_OP_CPU_KERNEL(
diff --git a/paddle/operators/mul_op.cc b/paddle/operators/mul_op.cc
index 06bc6172db0eb07ac227afef5928c6e7f39822bd..db81fd555d1c7bea7c0c3bbd70266b4952ed3724 100644
--- a/paddle/operators/mul_op.cc
+++ b/paddle/operators/mul_op.cc
@@ -67,4 +67,5 @@ class MulOpGrad : public framework::OperatorWithKernel {
 namespace ops = paddle::operators;
 REGISTER_OP(mul, ops::MulOp, ops::MulOpMaker);
 REGISTER_GRADIENT_OP(mul, mul_grad, ops::MulOpGrad);
+
 REGISTER_OP_CPU_KERNEL(mul, ops::MulKernel<paddle::platform::CPUPlace, float>);
diff --git a/paddle/operators/mul_op.cu b/paddle/operators/mul_op.cu
index 346a7e505d123b5e4e831daa39a1f6349b3dcccf..43debbc21a365a15c914e60e151f7782b82080cb 100644
--- a/paddle/operators/mul_op.cu
+++ b/paddle/operators/mul_op.cu
@@ -16,4 +16,5 @@
 #include "paddle/operators/mul_op.h"
 
 namespace ops = paddle::operators;
+
 REGISTER_OP_GPU_KERNEL(mul, ops::MulKernel<paddle::platform::GPUPlace, float>);
diff --git a/paddle/operators/mul_op.h b/paddle/operators/mul_op.h
index 67c3958149d4e382e90aefc52aabe750f1b1e9e4..ab12631c03453a18fbb067e2d12c2bc332acd567 100644
--- a/paddle/operators/mul_op.h
+++ b/paddle/operators/mul_op.h
@@ -45,5 +45,6 @@ class MulKernel : public framework::OpKernel {
     Z.device(place) = X.contract(Y, dim_pair);
   }
 };
+
 }  // namespace operators
 }  // namespace paddle
diff --git a/paddle/operators/sigmoid_op.cu b/paddle/operators/sigmoid_op.cu
index 9518c3091aec63bfc913ea3bc12a50034b63aac2..1a50dfe14a7b9e2614aadb7729de9f9e461e9905 100644
--- a/paddle/operators/sigmoid_op.cu
+++ b/paddle/operators/sigmoid_op.cu
@@ -16,6 +16,7 @@
 #include "paddle/operators/sigmoid_op.h"
 
 namespace ops = paddle::operators;
+
 REGISTER_OP_GPU_KERNEL(sigmoid,
                        ops::SigmoidKernel<paddle::platform::GPUPlace, float>);
 REGISTER_OP_GPU_KERNEL(
diff --git a/paddle/operators/softmax_op.cc b/paddle/operators/softmax_op.cc
index 1143fb66c67e842c2afbec2b44878a7ae1580856..3dd4e86918a86f408e7867d15b4fdc8f9cbbb5ce 100644
--- a/paddle/operators/softmax_op.cc
+++ b/paddle/operators/softmax_op.cc
@@ -63,6 +63,7 @@ class SoftmaxOpGrad : public framework::OperatorWithKernel {
 }  // namespace paddle
 
 namespace ops = paddle::operators;
+
 REGISTER_OP(softmax, ops::SoftmaxOp, ops::SoftmaxOpMaker);
 REGISTER_OP_CPU_KERNEL(softmax,
                        ops::SoftmaxKernel<paddle::platform::CPUPlace, float>);
diff --git a/paddle/operators/softmax_op.cu b/paddle/operators/softmax_op.cu
index 92d22142734dbdf31d4b63895bce5dc1fad95152..2e99a89699dbdcafc8055c47debf9e49f10507e6 100644
--- a/paddle/operators/softmax_op.cu
+++ b/paddle/operators/softmax_op.cu
@@ -16,6 +16,7 @@
 #include "paddle/operators/softmax_op.h"
 
 namespace ops = paddle::operators;
+
 REGISTER_OP_GPU_KERNEL(softmax,
                        ops::SoftmaxKernel<paddle::platform::GPUPlace, float>);
 REGISTER_OP_GPU_KERNEL(