diff --git a/frameworks/ans/native/src/notification_request.cpp b/frameworks/ans/native/src/notification_request.cpp
index 14553520944899f10977f62079dd94053cc11d27..d6c194ae117138eaf110924b6a7260a7ad8134c3 100644
--- a/frameworks/ans/native/src/notification_request.cpp
+++ b/frameworks/ans/native/src/notification_request.cpp
@@ -1638,7 +1638,7 @@ void NotificationRequest::ConvertJsonToNum(NotificationRequest *target, const nl
     }
 
     if (jsonObject.find("creatorUid") != jsonEnd) {
-        target->creatorUid_ = static_cast<uid_t>(jsonObject.at("creatorUid").get<uint32_t>());
+        target->creatorUid_ = jsonObject.at("creatorUid").get<int32_t>();
     }
 
     if (jsonObject.find("creatorPid") != jsonEnd) {