diff --git a/python/paddle/fluid/transpiler/ps_dispatcher.py b/python/paddle/fluid/transpiler/ps_dispatcher.py
index 19e6958f1ba8edbd62946d2d9e11c6960589fb6f..dcffadd531719431f27feb464ed58a65c04770ee 100644
--- a/python/paddle/fluid/transpiler/ps_dispatcher.py
+++ b/python/paddle/fluid/transpiler/ps_dispatcher.py
@@ -33,8 +33,10 @@ class PSDispatcher(object):
 
     def dispatch(self, varlist):
         """
-        :param varlist: a list of Variables
-        :return: a map of pserver endpoint -> varname 
+        Args:
+            varlist(list): a list of Variables
+        Returns:
+            a map of pserver endpoint -> varname
         """
         AssertionError("Interface has not been implemented.")