diff --git a/paddle/fluid/platform/float16.h b/paddle/fluid/platform/float16.h
index 673e1bcae4af6d039bc969f1de6e4bcab3748cb5..ffd183af68514dbb1a8b3de39000c9ca3f56ddc3 100644
--- a/paddle/fluid/platform/float16.h
+++ b/paddle/fluid/platform/float16.h
@@ -873,6 +873,11 @@ HOSTDEVICE inline bool(isfinite)(const float16& a) {
   return !((isnan)(a)) && !((isinf)(a));
 }
 
+inline std::ostream& operator<<(std::ostream& os, const float16& a) {
+  os << static_cast<float>(a);
+  return os;
+}
+
 }  // namespace platform
 }  // namespace paddle
 
diff --git a/paddle/fluid/platform/float16_test.cc b/paddle/fluid/platform/float16_test.cc
index d60aecf96c8828a5656f81fd3602cfb2e66990cf..a589e32b61a9b6a44bdc4529eee715d987d6922c 100644
--- a/paddle/fluid/platform/float16_test.cc
+++ b/paddle/fluid/platform/float16_test.cc
@@ -141,5 +141,10 @@ TEST(float16, lod_tensor_cpu) {
   }
 }
 
+TEST(float16, print) {
+  float16 a = float16(1.0f);
+  std::cout << a << std::endl;
+}
+
 }  // namespace platform
 }  // namespace paddle