diff --git a/services/ans/src/system_event_observer.cpp b/services/ans/src/system_event_observer.cpp
index 33a8d2eeba6b69d085cd5d001a00f58154dddfb8..2cce8ebd9c3c3182f911e6bf542182c483beea7b 100644
--- a/services/ans/src/system_event_observer.cpp
+++ b/services/ans/src/system_event_observer.cpp
@@ -36,6 +36,7 @@ SystemEventObserver::SystemEventObserver(const ISystemEvent &callbacks) : callba
     matchingSkills.AddEvent(EventFwk::CommonEventSupport::COMMON_EVENT_USER_REMOVED);
     matchingSkills.AddEvent(EventFwk::CommonEventSupport::COMMON_EVENT_PACKAGE_DATA_CLEARED);
     EventFwk::CommonEventSubscribeInfo commonEventSubscribeInfo(matchingSkills);
+    commonEventSubscribeInfo.SetThreadMode(EventFwk::CommonEventSubscribeInfo::COMMON);
 
     subscriber_ = std::make_shared<SystemEventSubscriber>(
         commonEventSubscribeInfo, std::bind(&SystemEventObserver::OnReceiveEvent, this, std::placeholders::_1));