diff --git a/chat/server/src/main/java/com/tencent/supersonic/chat/server/service/impl/ChatQueryServiceImpl.java b/chat/server/src/main/java/com/tencent/supersonic/chat/server/service/impl/ChatQueryServiceImpl.java
index 416b4946f..4f0dbac0f 100644
--- a/chat/server/src/main/java/com/tencent/supersonic/chat/server/service/impl/ChatQueryServiceImpl.java
+++ b/chat/server/src/main/java/com/tencent/supersonic/chat/server/service/impl/ChatQueryServiceImpl.java
@@ -560,8 +560,12 @@ public class ChatQueryServiceImpl implements ChatQueryService {
                 iterator.remove();
                 continue;
             }
-            List<String> collection =
-                    JsonUtil.toList(JsonUtil.toString(queryFilterValue), String.class);
+            List<String> collection = new ArrayList<>();
+            if (queryFilterValue instanceof List) {
+                collection.addAll((List) queryFilterValue);
+            } else if (queryFilterValue instanceof String) {
+                collection.add((String) queryFilterValue);
+            }
             if (FilterOperatorEnum.IN.equals(queryFilter.getOperator())
                     && CollectionUtils.isEmpty(collection)) {
                 iterator.remove();