diff --git a/pig-common/pig-common-security/src/main/java/com/pig4cloud/pig/common/security/service/PigUserDetailsServiceImpl.java b/pig-common/pig-common-security/src/main/java/com/pig4cloud/pig/common/security/service/PigUserDetailsServiceImpl.java
index 0e172cc0..7237e8e5 100755
--- a/pig-common/pig-common-security/src/main/java/com/pig4cloud/pig/common/security/service/PigUserDetailsServiceImpl.java
+++ b/pig-common/pig-common-security/src/main/java/com/pig4cloud/pig/common/security/service/PigUserDetailsServiceImpl.java
@@ -73,7 +73,9 @@ public class PigUserDetailsServiceImpl implements UserDetailsService {
 
 		R<UserInfo> result = remoteUserService.info(username, SecurityConstants.FROM_IN);
 		UserDetails userDetails = getUserDetails(result);
-		cache.put(username, userDetails);
+        if (cache != null) {
+		    cache.put(username, userDetails);
+        }
 		return userDetails;
 	}