diff --git a/game-server/app/services/checkParam.ts b/game-server/app/services/checkParam.ts
index 19551348c..825a8486e 100644
--- a/game-server/app/services/checkParam.ts
+++ b/game-server/app/services/checkParam.ts
@@ -753,7 +753,7 @@ export function checkRouteParam(route: string, msg: any) {
             }
         case "battle.towerBattleHandler.settleTask":
             {
-                if(!checkNaturalNumbers(msg.batchCode, msg.taskCode)) return false;
+                if(!checkStringIfExist(msg.batchCode, msg.taskCode)) return false;
                 break;
             }
         case "battle.towerBattleHandler.receiveBox":
diff --git a/game-server/app/services/ladderService.ts b/game-server/app/services/ladderService.ts
index 43d9384d8..d57baa87c 100644
--- a/game-server/app/services/ladderService.ts
+++ b/game-server/app/services/ladderService.ts
@@ -168,7 +168,9 @@ function randomRank(isBefore: boolean, myRank: number, range: number, len: numbe
         let rand = getRandValueByMinMax(n * i + 1, n * (i + 1) + 1, 0); // 因为这个的范围是[min, max)，而想要的是 (n * i, n * (i - 1)]
         if(rand) {
             let ratio = isBefore? -1: 1;
-            arr.push(myRank + ratio * rand);
+            let rank = myRank + ratio * rand;
+            if( rank > 3001) rank = 3001;
+            arr.push(rank);
         }
     }
     return arr;