diff --git a/src/api_s2c/wzry/ApiDldFight.ts b/src/api_s2c/wzry/ApiDldFight.ts
index 1f1b56e..bb98360 100644
--- a/src/api_s2c/wzry/ApiDldFight.ts
+++ b/src/api_s2c/wzry/ApiDldFight.ts
@@ -8,8 +8,15 @@ import { PublicShared } from "../../shared/public/public";
 import { HongDianChange } from "../hongdian/fun";
 
 const maxScore = 269; // 积分上限
+const lockPrefix = 'lock:DldFight:';
 
 export default async function (call: ApiCall<ReqDldFight, ResDldFight>) {
+    const lockKey = lockPrefix + call.uid;
+    const gotLock = await G.ioredis.setnx(lockKey, 1);
+    if (!gotLock) {
+        return call.errorCode(-101); // -101 并发请求, 告知客户端稍后再试 request_too_fast
+    }
+    await G.ioredis.pexpire(lockKey, 500); // 设置 ttl 避免死锁. 策划要求: 500ms
     let status = await WangZheRongYaofun.getWangZheStatus();
     if (status.status != 3) {
         // 未到大乱斗时间
@@ -75,7 +82,7 @@ export default async function (call: ApiCall<ReqDldFight, ResDldFight>) {
     _mydata.jifen = _myFight.jifen;
 
     HongDianChange.sendChangeKey(call.uid, ['wzryhd']);
-
+    await G.ioredis.del(lockKey);
     call.succ({
         mydata: _mydata,
         result: result,