diff --git a/server/like-admin/src/main/java/com/mdd/admin/service/system/impl/SystemLoginServiceImpl.java b/server/like-admin/src/main/java/com/mdd/admin/service/system/impl/SystemLoginServiceImpl.java
index 98db95e4..e7557f0a 100644
--- a/server/like-admin/src/main/java/com/mdd/admin/service/system/impl/SystemLoginServiceImpl.java
+++ b/server/like-admin/src/main/java/com/mdd/admin/service/system/impl/SystemLoginServiceImpl.java
@@ -79,7 +79,7 @@ public class SystemLoginServiceImpl implements ISystemLoginService {
             if (sysAdmin.getIsMultipoint() == 0) {
                 Set<Object> ts = RedisUtil.sGet(AdminConfig.backstageTokenSet + sysAdmin.getId());
                 for (Object t: ts) {
-                    RedisUtil.del(t.toString());
+                    RedisUtil.del(AdminConfig.backstageTokenKey+t.toString());
                 }
                 RedisUtil.del(AdminConfig.backstageTokenSet + sysAdmin.getId());
                 RedisUtil.sSet(AdminConfig.backstageTokenSet + sysAdmin.getId(), token);