diff --git a/assets/Scripts/chat18x/payment/PaymentService.ts b/assets/Scripts/chat18x/payment/PaymentService.ts
index 00f4898d..58c185a3 100644
--- a/assets/Scripts/chat18x/payment/PaymentService.ts
+++ b/assets/Scripts/chat18x/payment/PaymentService.ts
@@ -2,7 +2,7 @@
  * 支付对外的相关接口
  * 
  */
-import { EventTarget } from "cc"; 
+import { EventTarget, game, Game } from "cc";
 import { PaymentApi } from "./PaymentApi";
 import { PaymentOpenerFactory, type OpenStrategy } from "./PaymentOpener";
 import { PendingOrderRepo } from "./PendingOrderRepo";
@@ -79,21 +79,49 @@ export class PaymentService {
 
   /** App 回到前台后恢复未完成订单的轮询（在 onShow 时调用） */
   async resumePending(): Promise<void> {
-    const all = PendingOrderRepo.instance.all();
-    for (const o of all) {
-      // 可以做去重/只处理未过期的
+    const now = Date.now();
+    const list = PendingOrderRepo.instance.all();
+  
+    // 去重：同 orderId 只保留 createdAt 最新的一条
+    const uniq = new Map<string, PendingOrder>();
+    for (const o of list) {
+      const ex = uniq.get(o.orderId);
+      if (!ex || (o.createdAt ?? 0) > (ex.createdAt ?? 0)) {
+        uniq.set(o.orderId, o);
+      }
+    }
+  
+    for (const o of uniq.values()) {
+      // 只处理未过期
+      if (this.isOrderExpired(o, now)) {
+        PendingOrderRepo.instance.remove(o.orderId);
+        this.bus.emit(PaymentEvents.Finished, {
+          orderId: o.orderId,
+          status: "EXPIRED" as OrderStatus,
+          message: "order expired",
+        } as PaymentResult);
+        continue;
+      }
+  
+      // 轮询最新且未过期的订单
       const r = await this.startPollingOnly(o.orderId);
       if (r && r.status !== "PENDING" && r.status !== "CREATED") {
         PendingOrderRepo.instance.remove(o.orderId);
         this.bus.emit(PaymentEvents.Finished, {
           orderId: o.orderId,
           status: r.status as OrderStatus,
-          message: r.failureReason
+          message: r.failureReason,
         } as PaymentResult);
       }
+      // r === null（轮询超时）时保留在仓库，等待下一次 resume 再查
     }
   }
 
+  /** 判断订单是否过期：有 expireAt 且 now >= expireAt 才认为过期 */
+  private isOrderExpired(o: PendingOrder, now = Date.now()): boolean {
+    return typeof o.expireAt === "number" && now >= o.expireAt;
+  }  
+
   /** 仅轮询（用于 resumePending 或手动刷新） */
   private async startPollingOnly(orderId: string) {
     const poller = new PaymentPoller();
@@ -106,12 +134,34 @@ export class PaymentService {
   }
 
   /** 等待“回到前台”的占位实现：实际请在 App 生命周期里调用 resumePending() */
-  private async waitAppResumeIfNeeded(open: OpenStrategy) {
-    // 如果是系统浏览器，我们通常等“App 回到前台”再开始轮询；
-    // 这里简单 sleep 1s，实际项目请监听 Cocos 的 onShow/onHide 或平台回调。
-    if (open === "system") {
-      await new Promise(res => setTimeout(res, 1000));
+  private waitAppResumeIfNeeded(open: OpenStrategy): Promise<void> {
+    if (open !== "system") {
+      // 内嵌 WebView / 小游戏平台通常可以在回调里直接开始轮询
+      return Promise.resolve();
     }
+  
+    return new Promise<void>((resolve) => {
+      let finished = false;
+      const finish = () => {
+        if (finished) return;
+        finished = true;
+        // 安全移除监听
+        game.off(Game.EVENT_SHOW, onShow, this);
+        resolve();
+      };
+  
+      const onShow = () => {
+        // 应用回到前台
+        finish();
+      };
+  
+      // 监听一次“回到前台”
+      game.on(Game.EVENT_SHOW, onShow, this);
+  
+      // 兜底：某些环境（桌面浏览器）可能不会触发隐藏/显示事件，避免一直卡住
+      const FALLBACK_MS = 15000; // 按需调整
+      setTimeout(finish, FALLBACK_MS);
+    });
   }
 }
 export default PaymentService;