diff --git a/paddle/fluid/framework/operator.cc b/paddle/fluid/framework/operator.cc
index 90eb0e30f36e3421e0c926264ea6e0c36b04defa..c633a2f847683debce08c40b0c2ed6e58c0a7ad1 100644
--- a/paddle/fluid/framework/operator.cc
+++ b/paddle/fluid/framework/operator.cc
@@ -293,6 +293,38 @@ static Tensor* GetMutableTensorFromVar(Variable* var) {
   }
 }
 
+bool ExecutionContext::HasInput(const std::string& name) const {
+  if (!op_.HasInputs(name)) {
+    return false;
+  }
+  auto& ins = Inputs(name);
+  size_t length = ins.size();
+  if (length == 0) {
+    return false;
+  }
+  PADDLE_ENFORCE_EQ(length, 1UL,
+                    "Input %s should not have more than one inputs", name);
+  auto arg = ins[0];
+  auto* var = arg == kEmptyVarName ? nullptr : scope_.FindVar(arg);
+  return var != nullptr;
+}
+
+bool ExecutionContext::HasOutput(const std::string& name) const {
+  if (!op_.HasOutputs(name)) {
+    return false;
+  }
+  auto& outs = Outputs(name);
+  size_t length = outs.size();
+  if (length == 0) {
+    return false;
+  }
+  PADDLE_ENFORCE_EQ(length, 1UL,
+                    "Output %s should not have more than one inputs", name);
+  auto arg = outs[0];
+  auto* var = arg == kEmptyVarName ? nullptr : scope_.FindVar(arg);
+  return var != nullptr;
+}
+
 template <>
 const Tensor* ExecutionContext::Input<Tensor>(const std::string& name) const {
   auto* var = InputVar(name);
diff --git a/paddle/fluid/framework/operator.h b/paddle/fluid/framework/operator.h
index 2f480e00c100d579e100de17d3feb957f5ef6167..b1d75d0d0ff3dccc67a1e833ccfe03a4cad8df39 100644
--- a/paddle/fluid/framework/operator.h
+++ b/paddle/fluid/framework/operator.h
@@ -191,9 +191,9 @@ class ExecutionContext {
     return op_.Attr<T>(name);
   }
 
-  bool HasInput(const std::string& name) const { return op_.HasInputs(name); }
+  bool HasInput(const std::string& name) const;
 
-  bool HasOutput(const std::string& name) const { return op_.HasOutputs(name); }
+  bool HasOutput(const std::string& name) const;
 
   size_t InputSize(const std::string& name) const {
     return op_.Inputs(name).size();