diff --git a/python/paddle/v2/fluid/tests/book/test_label_semantic_roles.py b/python/paddle/v2/fluid/tests/book/test_label_semantic_roles.py
index be92c48ac52b6f40d78672743f9fc1462375b533..1a342bf1fbbc0e5f4e3c7d440424b66c4b9f732f 100644
--- a/python/paddle/v2/fluid/tests/book/test_label_semantic_roles.py
+++ b/python/paddle/v2/fluid/tests/book/test_label_semantic_roles.py
@@ -34,7 +34,7 @@ mix_hidden_lr = 1e-3
 
 IS_SPARSE = True
 PASS_NUM = 10
-BATCH_SIZE = 20
+BATCH_SIZE = 10
 
 embedding_name = 'emb'