diff --git a/PaddleCV/metric_learning/utility.py b/PaddleCV/metric_learning/utility.py
index e6c5b26791f10180d8bd2bfd77677ab9a17d5cde..de1f78cbfebbc2fba5065bd1240f98435fea40de 100644
--- a/PaddleCV/metric_learning/utility.py
+++ b/PaddleCV/metric_learning/utility.py
@@ -125,7 +125,7 @@ def recall_topk_parallel(fea, lab, k):
     N = 100
     L = fea.shape[0] / N
     params = []
-    for i in xrange(N):
+    for i in range(N):
         if i == N - 1:
             s, e = int(i * L), int(fea.shape[0])
         else: