diff --git a/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/request/QueryDimValueReq.java b/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/request/QueryDimValueReq.java
index cfaa74f6f..b5030de83 100644
--- a/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/request/QueryDimValueReq.java
+++ b/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/request/QueryDimValueReq.java
@@ -11,6 +11,6 @@ public class QueryDimValueReq {
     private Long modelId;
     private String dimensionBizName;
     private String value;
-    private DateConf dateInfo;
+    private DateConf dateInfo = new DateConf();
 
 }