diff --git a/game-server/app/servers/battle/handler/ladderHandler.ts b/game-server/app/servers/battle/handler/ladderHandler.ts
index 33a57684a..6cf63c9c3 100644
--- a/game-server/app/servers/battle/handler/ladderHandler.ts
+++ b/game-server/app/servers/battle/handler/ladderHandler.ts
@@ -375,12 +375,13 @@ export class LadderHandler {
         }
 
         let roleId = session.get('roleId');
+        let serverId = session.get('serverId');
 
         let atkLadderMatch = await LadderMatchModel.findByRoleId(roleId);
         if(!atkLadderMatch || !atkLadderMatch.defense) return resResult(STATUS.LADDER_NOT_OPEN);
         let myRank = atkLadderMatch.rank;
 
-        let defLadderMatch = await LadderMatchModel.findByRank(rank);
+        let defLadderMatch = await LadderMatchModel.findByRank(serverId, rank);
         if(defLadderMatch) {
             atkLadderMatch = await LadderMatchModel.findOneAndUpdate({ roleId }, { $set: { rank, oldRank: myRank, historyRank: rank } }, { new: true }).lean();
             defLadderMatch = await LadderMatchModel.findOneAndUpdate({ roleId: defLadderMatch.roleId }, { $set: { rank: myRank, oldRank: rank } }, { new: true }).lean();
diff --git a/game-server/app/services/ladderService.ts b/game-server/app/services/ladderService.ts
index 3cfb58ca7..43d9384d8 100644
--- a/game-server/app/services/ladderService.ts
+++ b/game-server/app/services/ladderService.ts
@@ -203,7 +203,7 @@ export async function getLadderOppStatus(ladderData: LadderMatchType, targetRole
             let hisLadderData = await LadderMatchRecModel.checkByRank(ladderData.serverId, `robot${rank}`);
             if(hisLadderData) return { status: LADDER_OPP_STATUS.OPP_IS_LOCKED };
 
-            let ladderMatch = await LadderMatchModel.isRankExist(rank);
+            let ladderMatch = await LadderMatchModel.isRankExist(ladderData.serverId, rank);
             if(ladderMatch) {
                 return { status: LADDER_OPP_STATUS.OPP_RANK_CHANGE };
             }
diff --git a/shared/db/LadderMatch.ts b/shared/db/LadderMatch.ts
index e637d5e08..3e039e1de 100644
--- a/shared/db/LadderMatch.ts
+++ b/shared/db/LadderMatch.ts
@@ -4,6 +4,7 @@ import { LadderDefense, LadderOppPlayerInDB } from '../domain/battleField/ladder
 import Role from './Role';
 
 @index({ roleId: 1 })
+@index({ serverId: 1, rank: 1 })
 export default class LadderMatch extends BaseModel {
     @prop({ required: true, default: 0 })
     serverId: number;					// 角色 id
@@ -41,13 +42,13 @@ export default class LadderMatch extends BaseModel {
         return result;
     }
 
-    public static async findByRank(rank: number) {
-        const result: LadderMatchType = await LadderMatchModel.findOne({ rank }).lean();
+    public static async findByRank(serverId: number, rank: number) {
+        const result: LadderMatchType = await LadderMatchModel.findOne({ serverId, rank }).lean();
         return result;
     }
 
-    public static async isRankExist(rank: number) {
-        const result = await LadderMatchModel.exists({ rank });
+    public static async isRankExist(serverId: number, rank: number) {
+        const result = await LadderMatchModel.exists({ serverId, rank });
         return result;
     }
     public static async findByRoleIdAndInclude(roleId: string) {