diff --git a/app/internal/game/game.go b/app/internal/game/game.go
index 8b749c3..328cc1d 100644
--- a/app/internal/game/game.go
+++ b/app/internal/game/game.go
@@ -454,18 +454,20 @@ func (gm *GameManager) LeaveRoomWithTTL(roomID, playerID string) error {
 func (gm *GameManager) MarkPlayerOnline(roomID, playerID string) {
 	gm.mu.Lock()
 	defer gm.mu.Unlock()
-
 	ctx := context.Background()
 	room, err := gm.loadRoom(ctx, roomID)
 	if err != nil {
 		return
 	}
-
 	for _, p := range room.Players {
 		if p.ID == playerID {
 			p.IsOnline = true
 			gm.saveRoom(ctx, room)
 			gm.rdb.Delete(ctx, redis.PlayerTTLKey(playerID))
+			// 刷新用户-房间关联的TTL
+			if p.UserID != "" {
+				gm.rdb.Set(ctx, redis.UserRoomKey(p.UserID), roomID, redis.RoomTTL)
+			}
 			return
 		}
 	}