diff --git a/python/paddle/reader/decorator.py b/python/paddle/reader/decorator.py
index e06c151d309bc01f4686aaf19c14880643abf4d4..7b73a3a930cc2c53a54bf06bb16007e01ed5c9c3 100644
--- a/python/paddle/reader/decorator.py
+++ b/python/paddle/reader/decorator.py
@@ -522,6 +522,7 @@ def fake(reader, data_num):
         while fake_reader.yield_num < data_num:
             yield fake_reader.data
             fake_reader.yield_num += 1
+        fake_reader.yield_num = 0
 
     fake_reader.data = None
     fake_reader.yield_num = 0