diff --git a/src/main/java/com/ai/da/common/utils/RedisUtil.java b/src/main/java/com/ai/da/common/utils/RedisUtil.java
index eea3ce3f..12fbe3a2 100644
--- a/src/main/java/com/ai/da/common/utils/RedisUtil.java
+++ b/src/main/java/com/ai/da/common/utils/RedisUtil.java
@@ -254,4 +254,6 @@ public class RedisUtil {
         redisTemplate.expire(key, expire, TimeUnit.DAYS);
     }
 
+    public final static String CHANGE_MAILBOX = "ChangeMailbox:";
+
 }