diff --git a/tduck-common/src/main/java/com/tduck/cloud/common/util/RedisUtils.java b/tduck-common/src/main/java/com/tduck/cloud/common/util/RedisUtils.java
index 2ea17e9..0d150c5 100644
--- a/tduck-common/src/main/java/com/tduck/cloud/common/util/RedisUtils.java
+++ b/tduck-common/src/main/java/com/tduck/cloud/common/util/RedisUtils.java
@@ -25,7 +25,7 @@ public class RedisUtils {
     /**
      * 本项目的前缀
      */
-    public final static String REDIS_PREFIX = "epmet:questionnaire";
+    public final static String REDIS_PREFIX = "epmet:questionnaire:";
     /**
      * 不设置过期时长
      */