diff --git a/python/paddle/nn/clip.py b/python/paddle/nn/clip.py
index 54ed08e021a5cfff342854b7def28f97777d0c2a..c3e00894eb4a9f0080032235a4c56d95780d9706 100644
--- a/python/paddle/nn/clip.py
+++ b/python/paddle/nn/clip.py
@@ -371,7 +371,7 @@ class ClipGradByValue(ClipGradBase):
     Args:
         max (float): The maximum value to clip by.
         min (float, optional): The minimum value to clip by. if not set by user, it will be set to ``-max``
-            automatically. In this case, ``max`` must be greater than 0.
+            automatically. In this case, ``max`` must be greater than :math:`0`.
 
     Examples:
         .. code-block:: python
diff --git a/python/paddle/nn/functional/common.py b/python/paddle/nn/functional/common.py
index 6758aab997547506a4f662378624723b1675d60a..b957eb369ad8abc55ede2ddf297239a97cdb3c23 100644
--- a/python/paddle/nn/functional/common.py
+++ b/python/paddle/nn/functional/common.py
@@ -1730,7 +1730,7 @@ def zeropad2d(x, padding, data_format="NCHW", name=None):
         data_format(str, optional): An string from: "NHWC", "NCHW". Specify the data format of
             the input data. Default: "NCHW".
         name(str, optional): The default value is None. Normally there is no need for user
-            to set this property.
+            to set this property. For more information, please refer to :ref:`api_guide_Name`.
 
     Returns:
         Tensor, padded with 0 according to pad and data type is same as input.
@@ -1739,12 +1739,11 @@ def zeropad2d(x, padding, data_format="NCHW", name=None):
         .. code-block:: python
 
             import paddle
-            import numpy as np
             import paddle.nn.functional as F
-
-            x_shape = (1, 1, 2, 3)
-            x = paddle.arange(np.prod(x_shape), dtype="float32").reshape(x_shape) + 1
+            x_shape = paddle.to_tensor([1, 1, 2, 3])
+            x = paddle.arange(paddle.prod(x_shape), dtype="float32").reshape(x_shape) + 1
             y = F.zeropad2d(x, [1, 2, 1, 1])
+            print(y)
             # [[[[0. 0. 0. 0. 0. 0.]
             #    [0. 1. 2. 3. 0. 0.]
             #    [0. 4. 5. 6. 0. 0.]
diff --git a/python/paddle/nn/layer/rnn.py b/python/paddle/nn/layer/rnn.py
index 7913ce3603567743e8e41b5e73b56f38c27bfd23..61e731c045a08b93b263b1a2714dd014166cd53a 100644
--- a/python/paddle/nn/layer/rnn.py
+++ b/python/paddle/nn/layer/rnn.py
@@ -1224,7 +1224,7 @@ class BiRNN(Layer):
     Parameters:
         cell_fw (RNNCellBase): A RNNCellBase instance used for forward RNN.
         cell_bw (RNNCellBase): A RNNCellBase instance used for backward RNN.
-        time_major (bool): Whether the first dimension of the input means the
+        time_major (bool, optional): Whether the first dimension of the input means the
             time steps. Defaults to False.
 
     Inputs: