diff --git a/paddle/math/Function.cpp b/paddle/math/Function.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..21d271917287056a73005b7b76f6e32fd8a4500e
--- /dev/null
+++ b/paddle/math/Function.cpp
@@ -0,0 +1,47 @@
+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+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 "Function.h"
+
+namespace paddle {
+
+template <>
+size_t FuncConfig::get<size_t>(const std::string& key) const {
+  auto it = valueMap_.find(key);
+  CHECK(it != valueMap_.end()) << "Cannot find value: '" << key << "'";
+  return it->second.s;
+}
+
+template <>
+real FuncConfig::get<real>(const std::string& key) const {
+  auto it = valueMap_.find(key);
+  CHECK(it != valueMap_.end()) << "Cannot find value: '" << key << "'";
+  return it->second.r;
+}
+
+template <>
+void FuncConfig::set<size_t>(const std::string& key, size_t v) {
+  CHECK(valueMap_.count(key) == 0) << "Duplicated value: " << key;
+  valueMap_[key].s = v;
+}
+
+template <>
+void FuncConfig::set<real>(const std::string& key, real v) {
+  CHECK(valueMap_.count(key) == 0) << "Duplicated value: " << key;
+  valueMap_[key].r = v;
+}
+
+ClassRegistrar<FunctionBase> FunctionBase::funcRegistrar_;
+
+}  // namespace paddle
diff --git a/paddle/math/Function.h b/paddle/math/Function.h
new file mode 100644
index 0000000000000000000000000000000000000000..b41ba2a13d3774932fd9efe36be77669eba4a0f3
--- /dev/null
+++ b/paddle/math/Function.h
@@ -0,0 +1,84 @@
+/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
+
+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 <map>
+#include <vector>
+#include "paddle/utils/ClassRegistrar.h"
+#include "paddle/math/Matrix.h"
+
+namespace paddle {
+
+enum DeviceType {
+  DEVICE_TYPE_UNSPECIFIED = 0,
+  DEVICE_TYPE_CPU = 1,
+  DEVICE_TYPE_GPU = 2,
+};
+
+template <DeviceType Device>
+struct MatrixT;
+
+template <>
+struct MatrixT<DEVICE_TYPE_CPU> {
+  using type = CpuMatrix;
+};
+
+template <>
+struct MatrixT<DEVICE_TYPE_GPU> {
+  using type = GpuMatrix;
+};
+
+typedef std::vector<Matrix> Arguments;
+
+class FuncConfig {
+public:
+  union value {
+    size_t s;
+    real r;
+  };
+
+  template <typename T>
+  T get(const std::string& key) const;
+
+  template <typename T>
+  void set(const std::string& key, T v);
+
+protected:
+  std::map<std::string, value> valueMap_;
+};
+
+class FunctionBase {
+public:
+  virtual ~FunctionBase() {}
+
+  virtual void init(const FuncConfig& config) {}
+
+  virtual void calc(const Arguments& inputs,
+                    const Arguments& outputs,
+                    const Arguments& inouts) {}
+
+  static ClassRegistrar<FunctionBase> funcRegistrar_;
+};
+
+#define FUNC_NAME(typeName, deviceName) #typeName "-" #deviceName
+
+#define REGISTER_TYPED_FUNC(typeName, deviceName, className) \
+  static InitFunction __reg_type_##typeName([]() {           \
+    FunctionBase::funcRegistrar_                             \
+        .registerClass<className<DEVICE_TYPE_##deviceName>>( \
+            FUNC_NAME(typeName, deviceName));                \
+  })
+
+}  // namespace paddle
diff --git a/paddle/math/cross_map_normal_op.cpp b/paddle/math/cross_map_normal_op.cpp
index be242926aff161a36f61c1101a80272ccbace168..0b7273206381d267f346e208122479190a762423 100644
--- a/paddle/math/cross_map_normal_op.cpp
+++ b/paddle/math/cross_map_normal_op.cpp
@@ -128,4 +128,50 @@ void CrossMapNormalGrad<DEVICE_TYPE_CPU>::operator()(CpuMatrix& inputsGrad,
   }
 }
 
+template <DeviceType Device>
+class CrossMapNormalFunc : public FunctionBase {
+public:
+  void init(const FuncConfig& config) override {
+    size_ = config.get<size_t>("size");
+    scale_ = config.get<real>("scale");
+    pow_ = config.get<real>("pow");
+  }
+
+  void calc(const Arguments& inputs,
+            const Arguments& outputs,
+            const Arguments& inouts) override {
+    CHECK_EQ(1, inputs.size());
+    CHECK_EQ(2, outputs.size());
+    CHECK_EQ(0, inouts.size());
+
+    auto input = dynamic_cast<const typename MatrixT<Device>::type&>(inputs[0]);
+    auto output =
+        dynamic_cast<const typename MatrixT<Device>::type&>(outputs[0]);
+    auto denom =
+        dynamic_cast<const typename MatrixT<Device>::type&>(outputs[1]);
+
+    CHECK(input.isContiguous());
+    CHECK(output.isContiguous());
+    CHECK(denom.isContiguous());
+    CHECK_EQ(output.getHeight(), input.getHeight());
+    CHECK_EQ(output.getWidth(), input.getWidth());
+    CHECK_EQ(output.getHeight(), denom.getHeight());
+    CHECK_EQ(output.getWidth(), denom.getWidth());
+
+    // CrossMapNormal<Device> cross;
+    // need:
+    // size_t channels,
+    // size_t imgSizeH,
+    // size_t imgSizeW,
+    // cross(output, denom, input, );
+  }
+
+private:
+  size_t size_;
+  real scale_;
+  real pow_;
+};
+
+REGISTER_TYPED_FUNC(CrossMapNormal, CPU, CrossMapNormalFunc);
+
 }  // namespace paddle
diff --git a/paddle/math/cross_map_normal_op.h b/paddle/math/cross_map_normal_op.h
index c2bb95f6b11fba35c396c9f5a04b4603991a4dfb..86f54abde108d184df8af26bd4326e9049030173 100644
--- a/paddle/math/cross_map_normal_op.h
+++ b/paddle/math/cross_map_normal_op.h
@@ -14,29 +14,11 @@ limitations under the License. */
 
 #pragma once
 
+#include "Function.h"
 #include "paddle/math/Matrix.h"
 
 namespace paddle {
 
-enum DeviceType {
-  DEVICE_TYPE_UNSPECIFIED = 0,
-  DEVICE_TYPE_CPU = 1,
-  DEVICE_TYPE_GPU = 2,
-};
-
-template <DeviceType Device>
-struct MatrixT;
-
-template <>
-struct MatrixT<DEVICE_TYPE_CPU> {
-  using type = CpuMatrix;
-};
-
-template <>
-struct MatrixT<DEVICE_TYPE_GPU> {
-  using type = GpuMatrix;
-};
-
 template <DeviceType Device>
 struct CrossMapNormal {
   void operator()(typename MatrixT<Device>::type& outputs,
diff --git a/paddle/math/tests/test_matrixCompare.cpp b/paddle/math/tests/test_matrixCompare.cpp
index 8d7a4fb94d0a1df1849c78d6c192504db7fc121c..0b75785528f5d8da8503a54ca8280aba8203f377 100644
--- a/paddle/math/tests/test_matrixCompare.cpp
+++ b/paddle/math/tests/test_matrixCompare.cpp
@@ -24,6 +24,7 @@ limitations under the License. */
 #include "paddle/utils/Stat.h"
 #include "TensorCheck.h"
 #include "paddle/math/cross_map_normal_op.h"
+#include "paddle/math/Function.h"
 
 using namespace paddle;  // NOLINT
 using namespace std;     // NOLINT
@@ -1280,6 +1281,15 @@ void testCrossMapNormalFwd(
   inputsGpu.copyFrom(inputs);
   outputsGpu.copyFrom(outputs);
 
+  FuncConfig config;
+  config.set("size", (size_t)sizeX);
+  config.set("scale", scale);
+  config.set("pow", pow);
+  FunctionBase* cpu =
+      FunctionBase::funcRegistrar_.createByType(FUNC_NAME(CrossMapNormal, CPU));
+  cpu->init(config);
+  // cpu->calc();
+
   CrossMapNormal<DEVICE_TYPE_CPU> cpuCross;
   cpuCross(
       outputs, denoms, inputs, channels, imgSizeH, imgSizeW, sizeX, scale, pow);
@@ -1295,11 +1305,6 @@ void testCrossMapNormalFwd(
            scale,
            pow);
 
-#if 0
-  outputsGpu.crossMapNormalFwd(
-      inputsGpu, imgSizeH, imgSizeW, denomsGpu, channels, sizeX, scale, pow);
-#endif
-
   TensorCheckErr(outputs, outputsGpu);
   TensorCheckErr(denoms, denomsGpu);
 }