diff --git a/pkg/common/constant/constant.go b/pkg/common/constant/constant.go
index 3179ff46b..54861384e 100644
--- a/pkg/common/constant/constant.go
+++ b/pkg/common/constant/constant.go
@@ -340,6 +340,6 @@ const LogFileName = "OpenIM.log"
 
 const StatisticsTimeInterval = 60
 
-const MaxNotificationNum = 100
+const MaxNotificationNum = 500
 
 const CurrentVersion = "v2.3.4-rc0"