diff --git a/src/py3.x/16.RecommenderSystems/test_lfm.py b/src/py3.x/16.RecommenderSystems/test_lfm.py
index f3a7d0e96..2d6193553 100644
--- a/src/py3.x/16.RecommenderSystems/test_lfm.py
+++ b/src/py3.x/16.RecommenderSystems/test_lfm.py
@@ -2,7 +2,7 @@
 
 
 # 负样本采样过程
-def RandomSelectNegativeSample(self, items):
+def RandSelectNegativeSamples(self, items):
     ret = {key: 1 for key in items}
     n = 0
     for i in range(0, len(items) * 3):