diff --git a/cmake/operators.cmake b/cmake/operators.cmake
index ecf2dbc81762a59d4d826ae8f5dfc0ab48a28910..e927fae63f0fc28902431c7b09350c7f7d10c52a 100644
--- a/cmake/operators.cmake
+++ b/cmake/operators.cmake
@@ -13,7 +13,7 @@ function(op_library TARGET)
     set(CUDNN_FILE)
     set(mkldnn_cc_srcs)
     set(MKLDNN_FILE)
-    set(op_common_deps operator op_registry math_function layer)
+    set(op_common_deps operator op_registry math_function layer common_infer_shape_functions)
     set(options "")
     set(oneValueArgs "")
     set(multiValueArgs SRCS DEPS)
diff --git a/paddle/fluid/framework/op_desc.cc b/paddle/fluid/framework/op_desc.cc
index 66fe71a80a7b0165a0d4afb38c89fc1fdb339190..78595e50b2da627065309041079839faa197cc8f 100644
--- a/paddle/fluid/framework/op_desc.cc
+++ b/paddle/fluid/framework/op_desc.cc
@@ -13,12 +13,14 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #include "paddle/fluid/framework/op_desc.h"
+
 #include <algorithm>
 #include <functional>
 #include <mutex>  // NOLINT
 #include <string>
 #include <unordered_map>
 #include <utility>
+
 #include "glog/logging.h"
 #include "paddle/fluid/framework/block_desc.h"
 #include "paddle/fluid/framework/op_call_stack.h"
@@ -51,6 +53,29 @@ class CompileTimeInferShapeContext : public InferShapeContext {
 
   std::vector<std::string> Outputs(const std::string &name) const override;
 
+  std::string GetInputNameByIdx(size_t idx) const override {
+    auto &op_proto =
+        paddle::framework::OpInfoMap::Instance().Get(op_.Type()).proto_;
+    PADDLE_ENFORCE_LT(idx, op_proto->inputs().size(),
+                      platform::errors::OutOfRange(
+                          "The index should be less than the size of inputs of "
+                          "operator %s, but got index is %d and size is %d",
+                          op_.Type(), idx, op_proto->inputs().size()));
+    return op_proto->inputs()[idx].name();
+  }
+
+  std::string GetOutputNameByIdx(size_t idx) const override {
+    auto &op_proto =
+        paddle::framework::OpInfoMap::Instance().Get(op_.Type()).proto_;
+    PADDLE_ENFORCE_LT(
+        idx, op_proto->outputs().size(),
+        platform::errors::OutOfRange(
+            "The index should be less than the size of outputs of "
+            "operator %s, but got index is %d and size is %d",
+            op_.Type(), idx, op_proto->outputs().size()));
+    return op_proto->outputs()[idx].name();
+  }
+
   void ShareDim(const std::string &in, const std::string &out, size_t i = 0,
                 size_t j = 0) override {
     PADDLE_ENFORCE_LT(i, Inputs(in).size());
diff --git a/paddle/fluid/framework/operator.cc b/paddle/fluid/framework/operator.cc
index 9c293bcdb852ff1ab5b1494838ee2c947cd372cc..c8c18bcee6a8868919c584527c088725c1c9d58d 100644
--- a/paddle/fluid/framework/operator.cc
+++ b/paddle/fluid/framework/operator.cc
@@ -12,6 +12,8 @@ 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 "paddle/fluid/framework/operator.h"
+
 #include <gflags/gflags.h>
 #include <glog/logging.h>
 
@@ -20,13 +22,13 @@ limitations under the License. */
 #include <string>
 #include <unordered_set>
 #include <vector>
+
 #include "paddle/fluid/framework/data_transform.h"
 #include "paddle/fluid/framework/details/nan_inf_utils.h"
 #include "paddle/fluid/framework/executor.h"
 #include "paddle/fluid/framework/lod_tensor.h"
 #include "paddle/fluid/framework/op_call_stack.h"
 #include "paddle/fluid/framework/op_proto_maker.h"
-#include "paddle/fluid/framework/operator.h"
 #include "paddle/fluid/framework/shape_inference.h"
 #include "paddle/fluid/framework/transfer_scope_cache.h"
 #include "paddle/fluid/framework/unused_var_check.h"
@@ -604,6 +606,29 @@ class RuntimeInferShapeContext : public InferShapeContext {
     return op_.Outputs(name);
   }
 
+  std::string GetInputNameByIdx(size_t idx) const override {
+    auto& op_proto =
+        paddle::framework::OpInfoMap::Instance().Get(op_.Type()).proto_;
+    PADDLE_ENFORCE_LT(idx, op_proto->inputs().size(),
+                      platform::errors::OutOfRange(
+                          "The index should be less than the size of inputs of "
+                          "operator %s, but got index is %d and size is %d",
+                          op_.Type(), idx, op_proto->inputs().size()));
+    return op_proto->inputs()[idx].name();
+  }
+
+  std::string GetOutputNameByIdx(size_t idx) const override {
+    auto& op_proto =
+        paddle::framework::OpInfoMap::Instance().Get(op_.Type()).proto_;
+    PADDLE_ENFORCE_LT(
+        idx, op_proto->outputs().size(),
+        platform::errors::OutOfRange(
+            "The index should be less than the size of outputs of "
+            "operator %s, but got index is %d and size is %d",
+            op_.Type(), idx, op_proto->outputs().size()));
+    return op_proto->outputs()[idx].name();
+  }
+
   void ShareDim(const std::string& in, const std::string& out, size_t i = 0,
                 size_t j = 0) override {
     auto in_it = ctx_.inputs.find(in);
diff --git a/paddle/fluid/framework/shape_inference.h b/paddle/fluid/framework/shape_inference.h
index 7ce8deb7cfc70d39de52e1fd9e5bace969f854e7..8d8a8f01b3f38c82a480bf7204721481586cc860 100644
--- a/paddle/fluid/framework/shape_inference.h
+++ b/paddle/fluid/framework/shape_inference.h
@@ -16,6 +16,7 @@ limitations under the License. */
 
 #include <string>
 #include <vector>
+
 #include "paddle/fluid/framework/attribute.h"
 #include "paddle/fluid/framework/ddim.h"
 #include "paddle/fluid/framework/framework.pb.h"
@@ -52,7 +53,8 @@ class InferShapeContext {
                              const std::vector<DDim> &dims) = 0;
   virtual void SetReaderDims(const std::string &name,
                              const std::vector<DDim> &dims);
-
+  virtual std::string GetInputNameByIdx(size_t idx) const = 0;
+  virtual std::string GetOutputNameByIdx(size_t idx) const = 0;
   virtual AttrReader Attrs() const = 0;
   virtual std::vector<std::string> Inputs(const std::string &name) const = 0;
   virtual std::vector<std::string> Outputs(const std::string &name) const = 0;
diff --git a/paddle/fluid/imperative/infer_shape_context.h b/paddle/fluid/imperative/infer_shape_context.h
index 65ac570bc7aa07a1a06e9deffcf797d6ef5d2519..fcd4545a2c82d3c64f8d8d8683438aaf0e6a2719 100644
--- a/paddle/fluid/imperative/infer_shape_context.h
+++ b/paddle/fluid/imperative/infer_shape_context.h
@@ -16,7 +16,9 @@
 
 #include <string>
 #include <vector>
+
 #include "paddle/fluid/framework/ddim.h"
+#include "paddle/fluid/framework/operator.h"
 #include "paddle/fluid/framework/shape_inference.h"
 #include "paddle/fluid/framework/type_defs.h"
 #include "paddle/fluid/imperative/type_defs.h"
@@ -32,8 +34,12 @@ class DygraphInferShapeContext : public framework::InferShapeContext {
  public:
   DygraphInferShapeContext(const NameVarMap<VarType>* in,
                            const NameVarMap<VarType>* out,
-                           const framework::AttributeMap* attr)
-      : var_base_map_in_(in), var_base_map_out_(out), attrs_(attr) {}
+                           const framework::AttributeMap* attr,
+                           const std::string op_type)
+      : var_base_map_in_(in),
+        var_base_map_out_(out),
+        attrs_(attr),
+        op_type_(op_type) {}
 
   bool HasInput(const std::string& name) const override {
     // has only one input
@@ -135,6 +141,28 @@ class DygraphInferShapeContext : public framework::InferShapeContext {
 
     return vec_res;
   }
+  std::string GetInputNameByIdx(size_t idx) const override {
+    auto& op_proto =
+        paddle::framework::OpInfoMap::Instance().Get(op_type_).proto_;
+    PADDLE_ENFORCE_LT(idx, op_proto->inputs().size(),
+                      platform::errors::OutOfRange(
+                          "The index should be less than the size of inputs of "
+                          "operator %s, but got index is %d and size is %d",
+                          op_type_, idx, op_proto->inputs().size()));
+    return op_proto->inputs()[idx].name();
+  }
+
+  std::string GetOutputNameByIdx(size_t idx) const override {
+    auto& op_proto =
+        paddle::framework::OpInfoMap::Instance().Get(op_type_).proto_;
+    PADDLE_ENFORCE_LT(
+        idx, op_proto->outputs().size(),
+        platform::errors::OutOfRange(
+            "The index should be less than the size of outputs of "
+            "operator %s, but got index is %d and size is %d",
+            op_type_, idx, op_proto->outputs().size()));
+    return op_proto->outputs()[idx].name();
+  }
 
   void ShareDim(const std::string& in, const std::string& out, size_t i = 0,
                 size_t j = 0) override {
@@ -367,6 +395,7 @@ class DygraphInferShapeContext : public framework::InferShapeContext {
   const NameVarMap<VarType>* var_base_map_in_;
   const NameVarMap<VarType>* var_base_map_out_;
   const framework::AttributeMap* attrs_;
+  const std::string op_type_;
 };
 
 }  // namespace imperative
diff --git a/paddle/fluid/imperative/prepared_operator.cc b/paddle/fluid/imperative/prepared_operator.cc
index def5c860449214ad4a08fd69ff575b91d6f162a0..82b91d2e77292dbefae54d0f7ecb7a2aff00f979 100644
--- a/paddle/fluid/imperative/prepared_operator.cc
+++ b/paddle/fluid/imperative/prepared_operator.cc
@@ -13,7 +13,9 @@
 // limitations under the License.
 
 #include "paddle/fluid/imperative/prepared_operator.h"
+
 #include <sstream>
+
 #include "paddle/fluid/imperative/execution_context.h"
 #include "paddle/fluid/imperative/infer_shape_context.h"
 #include "paddle/fluid/imperative/infer_var_type_context.h"
@@ -137,7 +139,8 @@ static void PreparedOpRunImpl(
   // TODO(zjl): remove scope in dygraph
   framework::Scope scope;
 
-  DygraphInferShapeContext<VarType> infer_shape_ctx(&ins, &outs, &attrs);
+  DygraphInferShapeContext<VarType> infer_shape_ctx(&ins, &outs, &attrs,
+                                                    op.Type());
   static_cast<const framework::OperatorWithKernel&>(op).InferShape(
       &infer_shape_ctx);
 
diff --git a/paddle/fluid/imperative/tests/test_layer.cc b/paddle/fluid/imperative/tests/test_layer.cc
index a231e16100b9f6b153beffe7c66de6fc6813414e..4a30ffb7e3d01ffa90a42278e2e5ef5271045d8a 100644
--- a/paddle/fluid/imperative/tests/test_layer.cc
+++ b/paddle/fluid/imperative/tests/test_layer.cc
@@ -17,9 +17,11 @@
 //
 
 #include <paddle/fluid/framework/op_registry.h>
+
 #include <memory>
 #include <string>
 #include <vector>
+
 #include "gtest/gtest.h"
 #include "paddle/fluid/imperative/execution_context.h"
 #include "paddle/fluid/imperative/infer_shape_context.h"
@@ -384,7 +386,7 @@ TEST(test_layer, test_dygraph_infershape_context) {
   concat_att_map["axis"] = 1;
 
   DygraphInferShapeContext<imperative::VarBase> infer_shape_ctx(
-      &ins, &outs, &concat_att_map);
+      &ins, &outs, &concat_att_map, "dummy");
 
   bool have_x = infer_shape_ctx.HasOutputs("Out");
   ASSERT_EQ(have_x, true);
diff --git a/paddle/fluid/operators/CMakeLists.txt b/paddle/fluid/operators/CMakeLists.txt
index 012b16a6a05f3d5fec3636b0a790d4d67334295f..e74f363d886e4601d07c1b2a7d79d8c915b59e93 100644
--- a/paddle/fluid/operators/CMakeLists.txt
+++ b/paddle/fluid/operators/CMakeLists.txt
@@ -86,12 +86,14 @@ if (WITH_DGC)
     set(COMMON_OP_DEPS ${COMMON_OP_DEPS} dgc)
 endif()
 
+cc_library(common_infer_shape_functions SRCS common_infer_shape_functions.cc DEPS operator)
 
 set(COMMON_OP_DEPS ${COMMON_OP_DEPS} selected_rows_functor selected_rows lod_tensor maxouting unpooling pooling lod_rank_table context_project sequence_pooling executor device_memory_aligment)
 set(COMMON_OP_DEPS ${COMMON_OP_DEPS} dynload_warpctc)
 set(COMMON_OP_DEPS ${COMMON_OP_DEPS} sequence_padding sequence_scale cos_sim_functor memory jit_kernel_helper concat_and_split cross_entropy softmax vol2col im2col sampler sample_prob tree2col)
 set(COMMON_OP_DEPS ${COMMON_OP_DEPS} sequence2batch lstm_compute matrix_bit_code gru_compute activation_functions beam_search fc matrix_inverse)
 set(COMMON_OP_DEPS ${COMMON_OP_DEPS} box_wrapper boost)
+set(COMMON_OP_DEPS ${COMMON_OP_DEPS} common_infer_shape_functions)
 if (WITH_GPU)
   set(COMMON_OP_DEPS ${COMMON_OP_DEPS} depthwise_conv prelu bert_encoder_functor)
 endif()
@@ -111,6 +113,7 @@ set(COMMON_OP_DEPS ${COMMON_OP_DEPS} tensor_formatter)
 set(OPERATOR_DEPS ${OPERATOR_DEPS} ${COMMON_OP_DEPS})
 set(GLOB_OPERATOR_DEPS ${OPERATOR_DEPS} CACHE INTERNAL "Global Op dependencies")
 
+cc_test(test_common_infer_shape_functions SRCS test_common_infer_shape_functions.cc DEPS common_infer_shape_functions ${COMMON_OP_DEPS} activation_op elementwise_add_op softmax_op softmax)
 cc_test(assign_op_test SRCS assign_op_test.cc DEPS assign_op)
 cc_test(gather_test SRCS gather_test.cc DEPS tensor)
 cc_test(scatter_test SRCS scatter_test.cc DEPS tensor math_function)
diff --git a/paddle/fluid/operators/activation_op.cc b/paddle/fluid/operators/activation_op.cc
index 7ea78879e1e08a9690f4a7a966d3e7c3decd293b..107d333d3a8593e6e3d7afb38c7688d80f2441f8 100644
--- a/paddle/fluid/operators/activation_op.cc
+++ b/paddle/fluid/operators/activation_op.cc
@@ -13,11 +13,14 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #include "paddle/fluid/operators/activation_op.h"
+
 #include <memory>
 #include <string>
 #include <type_traits>
 #include <unordered_map>
 #include <vector>
+
+#include "paddle/fluid/operators/common_infer_shape_functions.h"
 #include "paddle/fluid/operators/mkldnn/mkldnn_activation_op.h"
 #include "paddle/fluid/platform/port.h"
 #ifdef PADDLE_WITH_CUDA
diff --git a/paddle/fluid/operators/common_infer_shape_functions.cc b/paddle/fluid/operators/common_infer_shape_functions.cc
new file mode 100644
index 0000000000000000000000000000000000000000..22b212fc1b9f8844f0ae3555ac6d63af1f48d1cd
--- /dev/null
+++ b/paddle/fluid/operators/common_infer_shape_functions.cc
@@ -0,0 +1,166 @@
+/* Copyright (c) 2020 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 "paddle/fluid/operators/common_infer_shape_functions.h"
+
+#include <algorithm>
+#include <vector>
+
+// This file almostly contains all the infershape functions that are used in
+// operators.
+
+namespace paddle {
+namespace operators {
+namespace details {
+inline void GetBroadcastDimsArrays(const framework::DDim &x_dims,
+                                   const framework::DDim &y_dims,
+                                   int *x_dims_array, int *y_dims_array,
+                                   int *out_dims_array, const int max_dim,
+                                   const int axis) {
+  PADDLE_ENFORCE_GE(
+      axis, 0,
+      platform::errors::InvalidArgument(
+          "Axis should be great than or equal to 0, but received axis is %d.",
+          axis));
+  PADDLE_ENFORCE_LT(axis, max_dim,
+                    platform::errors::InvalidArgument(
+                        "Axis should be less than %d, but received axis is %d.",
+                        max_dim, axis));
+  if (x_dims.size() > y_dims.size()) {
+    std::fill(y_dims_array, y_dims_array + axis, 1);
+    if (axis + y_dims.size() < max_dim) {
+      std::fill(y_dims_array + axis + y_dims.size(), y_dims_array + max_dim, 1);
+    }
+    std::copy(x_dims.Get(), x_dims.Get() + x_dims.size(), x_dims_array);
+    std::copy(y_dims.Get(), y_dims.Get() + y_dims.size(), y_dims_array + axis);
+  } else {
+    std::fill(x_dims_array, x_dims_array + axis, 1);
+    if (axis + x_dims.size() < max_dim) {
+      std::fill(x_dims_array + axis + x_dims.size(), x_dims_array + max_dim, 1);
+    }
+    std::copy(x_dims.Get(), x_dims.Get() + x_dims.size(), x_dims_array + axis);
+    std::copy(y_dims.Get(), y_dims.Get() + y_dims.size(), y_dims_array);
+  }
+
+  for (int i = 0; i < max_dim; i++) {
+    PADDLE_ENFORCE_EQ(
+        x_dims_array[i] == y_dims_array[i] || x_dims_array[i] <= 1 ||
+            y_dims_array[i] <= 1,
+        true, platform::errors::InvalidArgument(
+                  "Broadcast dimension mismatch. Operands could "
+                  "not be broadcast together with the shape of X = [%s] and "
+                  "the shape of Y = [%s]. Received [%d] in X is not equal to "
+                  "[%d] in Y at i:%d.",
+                  x_dims, y_dims, x_dims_array[i], y_dims_array[i], i));
+    if ((x_dims_array[i] > 1 || y_dims_array[i] > 1) ||
+        (x_dims_array[i] == 1 && y_dims_array[i] == 1)) {
+      out_dims_array[i] = std::max(x_dims_array[i], y_dims_array[i]);
+    } else {
+      out_dims_array[i] = -1;
+    }
+  }
+}
+}  // namespace details
+
+// shape input(0) -> output(0) without change.
+void UnaryOpUnchangedInferShape(framework::InferShapeContext *ctx) {
+  auto x_name = ctx->GetInputNameByIdx(0);
+  auto out_name = ctx->GetOutputNameByIdx(0);
+  ctx->ShareDim(x_name, /*->*/ out_name);
+  ctx->ShareLoD(x_name, /*->*/ out_name);
+}
+
+// shape input(0) -> output(0) without change, check if axis in range [-Rank(x),
+// Rank(x)-1]
+void UnaryOpUnchangedInferShapeCheckAxis(framework::InferShapeContext *ctx) {
+  auto x_name = ctx->GetInputNameByIdx(0);
+  auto out_name = ctx->GetOutputNameByIdx(0);
+  auto x_dim = ctx->GetInputDim(x_name);
+  auto x_rank = x_dim.size();
+  auto axis = ctx->Attrs().Get<int>("axis");
+  PADDLE_ENFORCE_GE(
+      axis, -x_rank,
+      platform::errors::InvalidArgument(
+          "Attr(axis) value should be in range [-R, R-1], "
+          "R is the rank of Input(X). But received axis: %d, R: %d.",
+          axis, x_rank));
+  PADDLE_ENFORCE_LT(
+      axis, x_rank,
+      platform::errors::InvalidArgument(
+          "Attr(axis) value should be in range [-R, R-1], "
+          "R is the rank of Input(X). But received axis: %d, R: %d.",
+          axis, x_rank));
+  ctx->ShareDim(x_name, /*->*/ out_name);
+  ctx->ShareLoD(x_name, /*->*/ out_name);
+}
+
+// broadcast input(0) and input(1) -> output(0)
+void BinaryOpBroadcastInferShape(framework::InferShapeContext *ctx) {
+  auto x_name = ctx->GetInputNameByIdx(0);
+  auto y_name = ctx->GetInputNameByIdx(1);
+  auto out_name = ctx->GetOutputNameByIdx(0);
+  auto x_dims = ctx->GetInputDim(x_name);
+  auto y_dims = ctx->GetInputDim(y_name);
+  PADDLE_ENFORCE_EQ(
+      ctx->GetInputsVarType(y_name).front(),
+      framework::proto::VarType::LOD_TENSOR,
+      platform::errors::InvalidArgument(
+          "The var type of input %s should be LoDTensor, but got %s.",
+          ctx->Inputs(y_name).front(), ctx->GetInputsVarType(y_name).front()));
+
+  if (ctx->GetInputsVarType(x_name).front() ==
+      framework::proto::VarType::SELECTED_ROWS) {
+    PADDLE_ENFORCE_EQ(y_dims.size(), 1u,
+                      platform::errors::InvalidArgument(
+                          "For binary broadcastable operator, if X is "
+                          "Sparse(VarType.SELECTED_ROWS"
+                          "), Y must be scalar, and the size of Y should be 1. "
+                          "But reveived the size of Y = %s.",
+                          y_dims.size()));
+    PADDLE_ENFORCE_EQ(
+        y_dims[0], 1,
+        platform::errors::InvalidArgument(
+            "For binary broadcastable operator, if X is "
+            "Sparse(VarType.SELECTED_ROWS"
+            "), Y must be scalar, the first dimension of Y should be 1. "
+            "But reveived the first dimension of Y = %s.",
+            y_dims[0]));
+  } else if (ctx->GetInputsVarType(x_name).front() !=
+             framework::proto::VarType::LOD_TENSOR) {
+    PADDLE_THROW(platform::errors::InvalidArgument(
+        "For binary broadcastable operator, the var type of input X should "
+        "be LOD_TENSOR, but got %s",
+        ctx->GetInputsVarType(x_name).front()));
+  }
+
+  if (x_dims == y_dims) {
+    ctx->ShareDim(x_name, /*->*/ out_name);
+    ctx->ShareLoD(x_name, /*->*/ out_name);
+  } else {
+    int max_dim = std::max(x_dims.size(), y_dims.size());
+    int axis = ctx->Attrs().Get<int>("axis");
+    axis = (axis == -1 ? std::abs(x_dims.size() - y_dims.size()) : axis);
+    std::vector<int> x_dims_array(max_dim);
+    std::vector<int> y_dims_array(max_dim);
+    std::vector<int> out_dims_array(max_dim);
+    details::GetBroadcastDimsArrays(x_dims, y_dims, x_dims_array.data(),
+                                    y_dims_array.data(), out_dims_array.data(),
+                                    max_dim, axis);
+    ctx->SetOutputDim(out_name, framework::make_ddim(out_dims_array));
+    ctx->ShareLoD(x_name, /*->*/ out_name);
+  }
+}
+
+}  // namespace operators
+}  // namespace paddle
diff --git a/paddle/fluid/operators/common_infer_shape_functions.h b/paddle/fluid/operators/common_infer_shape_functions.h
new file mode 100644
index 0000000000000000000000000000000000000000..2cb9eab2865ce068a4f776bc63070c59bf029481
--- /dev/null
+++ b/paddle/fluid/operators/common_infer_shape_functions.h
@@ -0,0 +1,35 @@
+/* Copyright (c) 2020 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 "paddle/fluid/framework/op_registry.h"
+#include "paddle/fluid/framework/operator.h"
+
+// This file almostly contains all the infershape functions that are used in
+// operators.
+
+namespace paddle {
+namespace operators {
+
+// shape input(0) -> output(0) without change.
+void UnaryOpUnchangedInferShape(framework::InferShapeContext* ctx);
+// shape input(0) -> output(0) without change, check if axis in range [-Rank(x),
+// Rank(x)-1]
+void UnaryOpUnchangedInferShapeCheckAxis(framework::InferShapeContext* ctx);
+// broadcast input(0) and input(1) -> output(0)
+void BinaryOpBroadcastInferShape(framework::InferShapeContext* ctx);
+
+}  // namespace operators
+}  // namespace paddle
diff --git a/paddle/fluid/operators/elementwise/elementwise_op.h b/paddle/fluid/operators/elementwise/elementwise_op.h
index d14f8ae65feaec1c6d536cb18f366d96e137108b..ece6af1b5a6f562bd7ff81290f98e8636feabb0c 100644
--- a/paddle/fluid/operators/elementwise/elementwise_op.h
+++ b/paddle/fluid/operators/elementwise/elementwise_op.h
@@ -19,9 +19,11 @@ limitations under the License. */
 #include <string>
 #include <unordered_map>
 #include <vector>
+
 #include "paddle/fluid/framework/data_layout.h"
 #include "paddle/fluid/framework/op_registry.h"
 #include "paddle/fluid/framework/operator.h"
+#include "paddle/fluid/operators/common_infer_shape_functions.h"
 #include "paddle/fluid/operators/elementwise/elementwise_op_function.h"
 
 #ifdef PADDLE_WITH_MKLDNN
diff --git a/paddle/fluid/operators/selu_op.cc b/paddle/fluid/operators/selu_op.cc
index 7c77b2688e7b528f678418c67e77fa4abff04248..0adf61d7ce3e5b5792b9dc65d5ac8f884dc81ea5 100644
--- a/paddle/fluid/operators/selu_op.cc
+++ b/paddle/fluid/operators/selu_op.cc
@@ -13,10 +13,13 @@ See the License for the specific language governing permissions and
 limitations under the License. */
 
 #include "paddle/fluid/operators/selu_op.h"
+
 #include <memory>
 #include <string>
 #include <unordered_map>
 
+#include "paddle/fluid/operators/common_infer_shape_functions.h"
+
 namespace paddle {
 namespace operators {
 
@@ -28,11 +31,7 @@ class SeluOp : public framework::OperatorWithKernel {
       : OperatorWithKernel(type, inputs, outputs, attrs) {}
 
   void InferShape(framework::InferShapeContext *ctx) const override {
-    OP_INOUT_CHECK(ctx->HasInput("X"), "Input", "X", "selu");
-    OP_INOUT_CHECK(ctx->HasOutput("Out"), "Output", "Out", "selu");
-
-    ctx->ShareDim("X", /*->*/ "Out");
-    ctx->ShareLoD("X", /*->*/ "Out");
+    return UnaryOpUnchangedInferShape(ctx);
   }
 
  protected:
diff --git a/paddle/fluid/operators/test_common_infer_shape_functions.cc b/paddle/fluid/operators/test_common_infer_shape_functions.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ca8f6ce84fc571674fdfe6f29cbcd82a98fd8fcf
--- /dev/null
+++ b/paddle/fluid/operators/test_common_infer_shape_functions.cc
@@ -0,0 +1,145 @@
+/* Copyright (c) 2020 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 "gtest/gtest.h"
+#include "paddle/fluid/framework/ddim.h"
+#include "paddle/fluid/framework/operator.h"
+#include "paddle/fluid/framework/var_type.h"
+#include "paddle/fluid/imperative/infer_shape_context.h"
+#include "paddle/fluid/imperative/layer.h"
+#include "paddle/fluid/operators/common_infer_shape_functions.h"
+
+USE_OP(relu);
+USE_OP(elementwise_add);
+USE_OP(softmax);
+
+namespace paddle {
+namespace operators {
+namespace details {
+
+class DygraphInferShapeTest {
+ public:
+  void AddInput(const std::string& name, const framework::DDim& dim) {
+    std::shared_ptr<imperative::VarBase> vin(
+        new imperative::VarBase(false, name));
+    vin->MutableVar()->GetMutable<framework::LoDTensor>()->Resize(dim);
+    ins_[name] = {vin};
+  }
+  void AddOutput(const std::string& name, const framework::DDim& expected_dim) {
+    std::shared_ptr<imperative::VarBase> vout(
+        new imperative::VarBase(false, name));
+    vout->MutableVar()
+        ->GetMutable<framework::LoDTensor>();  // InitializeVariable
+    outs_[name] = {vout};
+    expected_dims_[name] = expected_dim;
+  }
+  void AddAttrs(const framework::AttributeMap& attrs) { attrs_ = attrs; }
+  void SetOpType(const std::string& op_type) { op_type_ = op_type; }
+  void Run(std::function<void(framework::InferShapeContext* ctx)> infer_shape) {
+    imperative::DygraphInferShapeContext<imperative::VarBase> ctx(
+        &ins_, &outs_, &attrs_, op_type_);
+    infer_shape(&ctx);
+    for (const auto& pair : expected_dims_) {
+      auto out = outs_[pair.first][0];
+      ASSERT_EQ(pair.second,
+                out->MutableVar()->GetMutable<framework::LoDTensor>()->dims());
+    }
+  }
+
+ private:
+  imperative::NameVarBaseMap ins_;
+  imperative::NameVarBaseMap outs_;
+  framework::AttributeMap attrs_;
+  std::string op_type_;
+  std::map<std::string, framework::DDim> expected_dims_;
+};
+}  // namespace details
+
+TEST(test_UnaryOpUnchangedInferShape, test_shape) {
+  details::DygraphInferShapeTest test;
+  test.AddInput("X", {2, 10});
+  test.AddOutput("Out", {2, 10});
+  test.SetOpType("relu");
+  test.Run(UnaryOpUnchangedInferShape);
+}
+
+TEST(test_BinaryOpBroadcastInferShape, test_same_shape) {
+  details::DygraphInferShapeTest test;
+  test.AddInput("X", {2, 3, 4, 5});
+  test.AddInput("Y", {2, 3, 4, 5});
+  test.AddOutput("Out", {2, 3, 4, 5});
+  test.SetOpType("elementwise_add");
+  test.Run(BinaryOpBroadcastInferShape);
+}
+
+TEST(test_BinaryOpBroadcastInferShape, test_broadcast1) {
+  details::DygraphInferShapeTest test;
+  test.AddInput("X", {2, 3, 4, 5});
+  test.AddInput("Y", {4, 5});
+  test.AddOutput("Out", {2, 3, 4, 5});
+  test.AddAttrs({
+      {"axis", -1},
+  });
+  test.SetOpType("elementwise_add");
+  test.Run(BinaryOpBroadcastInferShape);
+}
+
+TEST(test_BinaryOpBroadcastInferShape, test_broadcast2) {
+  details::DygraphInferShapeTest test;
+  test.AddInput("X", {2, 10, 5, 1});
+  test.AddInput("Y", {10, 1, 1});
+  test.AddOutput("Out", {2, 10, 5, 1});
+  test.AddAttrs({
+      {"axis", -1},
+  });
+  test.SetOpType("elementwise_add");
+  test.Run(BinaryOpBroadcastInferShape);
+}
+
+TEST(test_BinaryOpBroadcastInferShape, test_broadcast3) {
+  details::DygraphInferShapeTest test;
+  test.AddInput("X", {10, 1, 1});
+  test.AddInput("Y", {2, 10, 5, 5});
+  test.AddOutput("Out", {2, 10, 5, 5});
+  test.AddAttrs({
+      {"axis", -1},
+  });
+  test.SetOpType("elementwise_add");
+  test.Run(BinaryOpBroadcastInferShape);
+}
+
+TEST(test_UnaryOpUnchangedInferShapeCheckAxis, test_shape) {
+  details::DygraphInferShapeTest test;
+  test.AddInput("X", {2, 10});
+  test.AddOutput("Out", {2, 10});
+  test.AddAttrs({
+      {"axis", -1},
+  });
+  test.SetOpType("softmax");
+  test.Run(UnaryOpUnchangedInferShapeCheckAxis);
+}
+
+TEST(test_UnaryOpUnchangedInferShapeCheckAxis, test_axis_exception) {
+  details::DygraphInferShapeTest test;
+  test.AddInput("X", {2, 10});
+  test.AddOutput("Out", {2, 10});
+  test.AddAttrs({
+      {"axis", 2},
+  });
+  test.SetOpType("softmax");
+  ASSERT_ANY_THROW(test.Run(UnaryOpUnchangedInferShapeCheckAxis));
+}
+
+}  // namespace operators
+}  // namespace paddle