diff --git a/game-server/app/services/battleService.ts b/game-server/app/services/battleService.ts
index 98671dbfd..9ed475cbe 100644
--- a/game-server/app/services/battleService.ts
+++ b/game-server/app/services/battleService.ts
@@ -87,7 +87,7 @@ export async function towerBattleEnd(channelService: ChannelService, sid: string
             }
             const { reward } = getTowerDataByLv(towerLv);
             if (reward) towerReward = reward;
-            if (towerLv + 1 == HANG_UP_CONSTS.ENABLE_LV) {
+            if (towerLv == HANG_UP_CONSTS.ENABLE_LV) {
                 await startHangUp(roleId, roleName);
                 channelService.pushMessageByUids('hangUpEnable', {code: 200, data: {enable: true}}, [{uid: roleId, sid}]);
             }