diff --git a/internal/rpc/group/notification.go b/internal/rpc/group/notification.go
index 4b6036ec7..a9abb03e6 100644
--- a/internal/rpc/group/notification.go
+++ b/internal/rpc/group/notification.go
@@ -34,6 +34,12 @@ import (
 	"github.com/openimsdk/tools/utils/stringutil"
 )
 
+// GroupApplicationReceiver
+const (
+	applicantReceiver = iota
+	adminReceiver
+)
+
 func NewGroupNotificationSender(db controller.GroupDatabase, msgRpcClient *rpcclient.MessageRpcClient, userRpcClient *rpcclient.UserRpcClient, config *Config, fn func(ctx context.Context, userIDs []string) ([]notification.CommonUser, error)) *GroupNotificationSender {
 	return &GroupNotificationSender{
 		NotificationSender: rpcclient.NewNotificationSender(&config.NotificationConfig, rpcclient.WithRpcClient(msgRpcClient), rpcclient.WithUserRpcClient(userRpcClient)),
@@ -408,9 +414,9 @@ func (g *GroupNotificationSender) GroupApplicationAcceptedNotification(ctx conte
 	for _, userID := range append(userIDs, req.FromUserID) {
 		tips := &sdkws.GroupApplicationAcceptedTips{Group: group, OpUser: opUser, HandleMsg: req.HandledMsg}
 		if userID == req.FromUserID {
-			tips.ReceiverAs = 0
+			tips.ReceiverAs = applicantReceiver
 		} else {
-			tips.ReceiverAs = 1
+			tips.ReceiverAs = adminReceiver
 		}
 		g.Notification(ctx, mcontext.GetOpUserID(ctx), userID, constant.GroupApplicationAcceptedNotification, tips)
 	}
@@ -441,9 +447,9 @@ func (g *GroupNotificationSender) GroupApplicationRejectedNotification(ctx conte
 	for _, userID := range append(userIDs, req.FromUserID) {
 		tips := &sdkws.GroupApplicationAcceptedTips{Group: group, OpUser: opUser, HandleMsg: req.HandledMsg}
 		if userID == req.FromUserID {
-			tips.ReceiverAs = 0
+			tips.ReceiverAs = applicantReceiver
 		} else {
-			tips.ReceiverAs = 1
+			tips.ReceiverAs = adminReceiver
 		}
 		g.Notification(ctx, mcontext.GetOpUserID(ctx), userID, constant.GroupApplicationRejectedNotification, tips)
 	}