diff --git a/power-service/src/main/java/com/manage/service/cache/CacheManager.java b/power-service/src/main/java/com/manage/service/cache/CacheManager.java
index ed87d35..2f1c914 100644
--- a/power-service/src/main/java/com/manage/service/cache/CacheManager.java
+++ b/power-service/src/main/java/com/manage/service/cache/CacheManager.java
@@ -97,9 +97,11 @@ public class CacheManager {
             while (i.hasNext()) {
                 Map.Entry<String,Object> entry = (Map.Entry) i.next();
                 Cache cache = CacheManager.getCacheInfo(entry.getKey());
-                Power_UserVo o = (Power_UserVo)cache.getValue();
-                if (obj.getUserName().equals(o.getUserName()) && !entry.getKey().equals(token)) {
-                    clearOnly(entry.getKey());
+                if(null != cache.getValue() && cache.getValue() instanceof  Power_UserVo){
+                    Power_UserVo o = (Power_UserVo)cache.getValue();
+                    if (obj.getUserName().equals(o.getUserName()) && !entry.getKey().equals(token)) {
+                        clearOnly(entry.getKey());
+                    }
                 }
             }
         } catch (Exception e) {