diff --git a/screenhandler/src/dscreen_handler.cpp b/screenhandler/src/dscreen_handler.cpp
index e1e1ffc1c4cfce8d89b54b4957b38bda0fcb9569..68b017eadef53bd9f0205a5f965f000bacfa0cfb 100644
--- a/screenhandler/src/dscreen_handler.cpp
+++ b/screenhandler/src/dscreen_handler.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Copyright (c) 2022-2023 Huawei Device Co., Ltd.
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -162,6 +162,7 @@ std::vector<DHItem> DScreenHandler::Query()
 
         DHItem dhItem;
         dhItem.dhId = dhId;
+        dhItem.subtype = "screen";
         dhItem.attrs = attrJson.dump();
         dhItemVec.push_back(dhItem);
         DHLOGD("query result: dhId: %s, attrs: %s", GetAnonyString(dhId).c_str(), attrJson.dump().c_str());