diff --git a/python/paddle/fluid/layers/nn.py b/python/paddle/fluid/layers/nn.py
index 5b56811380f9b2c597a90f81a5b50cd981a3e67e..e804716fc9fd2df15b1e9907a7fc4e4a06fbd5b4 100644
--- a/python/paddle/fluid/layers/nn.py
+++ b/python/paddle/fluid/layers/nn.py
@@ -1280,7 +1280,9 @@ def sequence_conv(input,
         bias_attr (ParamAttr): The parameter attribute for the bias of this layer.
             If it is set to False, no bias will be added to the output units.
             If it is set to None, the bias is initialized zero. Default: None.
-        param_attr (ParamAttr|None): attributes for parameter
+        param_attr (ParamAttr): The parameter attribute for learnable parameters/weights
+            of this layer. If it is set to None, the parameter is initialized with
+            Xavier. Default: None.
         act (str): the activation type
 
     Returns: