diff --git a/python/paddle/fluid/dygraph/base.py b/python/paddle/fluid/dygraph/base.py
index 92ddb3223dfea687bb0778fb23e8e2f95d9e92f4..1015cc5d9f23d2d9a9fd59204ca71990bb6d0bed 100644
--- a/python/paddle/fluid/dygraph/base.py
+++ b/python/paddle/fluid/dygraph/base.py
@@ -13,6 +13,7 @@
 # limitations under the License.
 from ..wrapped_decorator import signature_safe_contextmanager, wrap_decorator
 import contextlib
+import functools
 import sys
 import numpy as np
 from paddle.fluid import core
@@ -195,6 +196,7 @@ def no_grad(func=None):
         return _switch_tracer_mode_guard_(is_train=False)
     else:
 
+        @functools.wraps(func)
         def __impl__(*args, **kwargs):
             with _switch_tracer_mode_guard_(is_train=False):
                 return func(*args, **kwargs)
diff --git a/python/paddle/fluid/tests/unittests/test_imperative_decorator.py b/python/paddle/fluid/tests/unittests/test_imperative_decorator.py
index 504c4dbdb2a23083c335e1348042b629d91173d9..2c1481c890a514e37593e5d11495e9f97c01e645 100644
--- a/python/paddle/fluid/tests/unittests/test_imperative_decorator.py
+++ b/python/paddle/fluid/tests/unittests/test_imperative_decorator.py
@@ -49,6 +49,7 @@ class TestTracerMode(unittest.TestCase):
             self.tracer._train_mode = self.init_mode
 
             self.assertEqual(self.no_grad_func(1), 1)
+            self.assertEqual(self.no_grad_func.__name__, "no_grad_func")
 
             self.assertEqual(self.tracer._train_mode, self.init_mode)