diff --git a/src/server/game/message_handler.go b/src/server/game/message_handler.go
index df0c54b2..1779a079 100644
--- a/src/server/game/message_handler.go
+++ b/src/server/game/message_handler.go
@@ -150,7 +150,10 @@ func (p *Player) handle(m *msg.Msg) error {
 		p.PlayMod.save()
 	case msg.HANDLE_TYPE_INVITE_FRIEND: // 邀请好友
 		InviteMod := p.PlayMod.getInviteMod()
-		InviteMod.AddInvite(m.From)
+		err := InviteMod.AddInvite(m.From)
+		if err != nil {
+			return err
+		}
 		p.AddLog(m.From, friend.LOG_TYPE_FRIEND_INVITE, "", m.SendT)
 		p.PlayMod.save()
 		p.PushClientRes(InviteMod.NotifySuccess())
diff --git a/src/server/game/mod/invite/invite.go b/src/server/game/mod/invite/invite.go
index 4db9e05a..1cc26505 100644
--- a/src/server/game/mod/invite/invite.go
+++ b/src/server/game/mod/invite/invite.go
@@ -19,8 +19,12 @@ func (i *InviteMod) InitData() {
 	}
 }
 
-func (i *InviteMod) AddInvite(id int) {
+func (i *InviteMod) AddInvite(id int) error {
+	if _, exists := i.InviteList[id]; exists {
+		return fmt.Errorf("invite already exists")
+	}
 	i.InviteList[id] = struct{}{}
+	return nil
 }
 
 func (i *InviteMod) GetReward(Index int) ([]*item.Item, error) {