diff --git a/miniprogram/src/pages/mine/index.jsx b/miniprogram/src/pages/mine/index.jsx
index 72867cf..454bed0 100644
--- a/miniprogram/src/pages/mine/index.jsx
+++ b/miniprogram/src/pages/mine/index.jsx
@@ -2,7 +2,7 @@ import { View, Text, Button, Input, Image } from '@tarojs/components';
 import Taro from '@tarojs/taro';
 import { useState, useEffect } from 'react';
 import { useTabIndex } from '@/utils/tab';
-import { isAuthed, getUser, logout, wxLogin, phoneLogin, bindPhone, sendCode, wxPhoneBind, updateProfile, getMe, mpQrConfirm } from '@/utils/auth';
+import { isAuthed, getUser, logout, wxLogin, phoneLogin, bindPhone, sendCode, wxPhoneBind, updateProfile, getMe } from '@/utils/auth';
 import { getMyBookings, checkIn, parseIso, BK_STATUS_OPTIONS, BK_TOPIC_OPTIONS, BK_SOURCE_OPTIONS } from '@/utils/booking';
 import Skeleton from '@/components/skeleton';
 import CountdownBox from '@/components/CountdownBox';
@@ -200,8 +200,6 @@ export default function Mine() {
   const [pTopics, setPTopics] = useState((user && user.topics) || []);
   const [pSource, setPSource] = useState((user && user.source) || '');
   const [saving, setSaving] = useState(false);
-  const [scanBusy, setScanBusy] = useState(false);
-  const [scanErr, setScanErr] = useState('');
   useEffect(() => {
     setPName((user && user.name) || '');
     setPStatus((user && user.status) || '');
@@ -264,23 +262,6 @@ export default function Mine() {
     Taro.showToast({ title: '已退出登录', icon: 'none' });
   };
 
-  /* ============ 跨端口扫码登录：扫电脑/网页登录页二维码 → 小程序确认 ============ */
-  const onScanLogin = async () => {
-    setScanErr(''); setScanBusy(true);
-    try {
-      const res = await Taro.scanCode();          // 扫其它端口登录页的「小程序扫码」二维码
-      const str = res.result || '';
-      const m = str.match(/[?&]scene=([^&#]+)/);  // 二维码内容=跨端口 login url，含 scene
-      if (!m) throw new Error('无效的扫码登录二维码');
-      const scene = decodeURIComponent(m[1]);
-      const { code } = await Taro.login();         // 微信登录 code
-      await mpQrConfirm(scene, code);              // 确认 → 目标端口轮询取到登录令牌
-      Taro.showToast({ title: '已登录目标端口，请回电脑/网页查看', icon: 'none' });
-    } catch (e) {
-      setScanErr((e && e.message) || '扫码登录失败');
-    } finally { setScanBusy(false); }
-  };
-
   /* ============ 未登录：登录入口 ============ */
   if (!user || !isAuthed()) {
     return (
@@ -354,12 +335,10 @@ export default function Mine() {
         <Button className="btn-ghost logout-btn" onClick={onLogout}>退出</Button>
       </View>
 
-      {/* 跨端口扫码登录：扫电脑/网页登录页的「小程序扫码」二维码 → 用本小程序确认登录该端口 */}
+      {/* 跨端口扫码登录：由电脑/网页登录页展示「小程序码」，微信扫码自动进入小程序授权页确认 */}
       <View className="card next-card">
-        <Text className="next-lbl">跨端口登录</Text>
-        <Text className="bind-tip">在电脑/网页登录页点「小程序扫码」，用本小程序「扫一扫」即可登录该端口</Text>
-        <Button className="btn-main" loading={scanBusy} onClick={onScanLogin}>扫码登录其它端口</Button>
-        {scanErr && <Text className="scan-err">{scanErr}</Text>}
+        <Text className="next-lbl">登录其它端</Text>
+        <Text className="bind-tip">在电脑/网页登录页点「小程序扫码」，用微信扫一扫，进入小程序授权页确认即可登录</Text>
       </View>
 
       {/* 下一场活动倒计时（个人信息卡之后显示；取最早的待参加且未开始的报名场次） */}
diff --git a/miniprogram/src/pages/scan-login/index.jsx b/miniprogram/src/pages/scan-login/index.jsx
index 6857e71..8af2850 100644
--- a/miniprogram/src/pages/scan-login/index.jsx
+++ b/miniprogram/src/pages/scan-login/index.jsx
@@ -1,6 +1,6 @@
 import { View, Text, Button, Input } from '@tarojs/components';
-import Taro, { useDidShow } from '@tarojs/taro';
-import { useState } from 'react';
+import Taro from '@tarojs/taro';
+import { useState, useEffect } from 'react';
 import { isAuthed, wxLogin, phoneLogin, sendCode, mpQrConfirm } from '@/utils/auth';
 import './index.scss';
 
@@ -20,13 +20,18 @@ export default function ScanLogin() {
   const [gateCode, setGateCode] = useState('');
   const [cd, setCd] = useState(0);
 
-  useDidShow(() => {
-    const opts = Taro.getEnterOptionsSync();
-    const q = (opts && opts.query) || {};
-    const s = String(q.scene || opts.scene || '');
-    setScene(s);
-    setDone(false); setMsg('');
-  });
+  // 冷启动/扫码进入：纯 React useEffect 读当前实例参数（wxacode 的 scene 在 router.params.scene）。
+  // 不再用 useLoad/useDidShow 等 Taro 元钩子（其内部在原生计时器里调度 React hook，会触发
+  // "Invalid attempt to destruct non-iterable" → 页面黑屏）。
+  useEffect(() => {
+    try {
+      const inst = Taro.getCurrentInstance();
+      const router = (inst && inst.router) || {};
+      const params = (router && (router.params || router.query)) || {};
+      const s = String(params.scene || router.scene || '');
+      if (s) setScene(s);
+    } catch { /* 忽略取参异常 */ }
+  }, []);
 
   const wxLoginNow = async () => {
     setBusy(true); setMsg('');
@@ -47,7 +52,8 @@ export default function ScanLogin() {
       const r = await sendCode(gatePhone);
       setMsg(`验证码已发送${r.debugCode ? `（演示 ${r.debugCode}）` : ''}`);
       setCd(60);
-      const t = window.setInterval(() => setCd((c) => (c <= 1 ? (window.clearInterval(t), 0) : c - 1)), 1000);
+      // 小程序无 window，用全局 setInterval/clearInterval（源码里 window.* 会导致运行时 ReferenceError）
+      const t = setInterval(() => setCd((c) => (c <= 1 ? (clearInterval(t), 0) : c - 1)), 1000);
     } catch (e) { setMsg((e && e.message) || '发送失败'); }
     finally { setBusy(false); }
   };
@@ -106,7 +112,7 @@ export default function ScanLogin() {
             <View className="sl-icon">{done ? '✓' : '✅'}</View>
             <Text className="sl-title">{done ? '已完成' : '确认扫码操作'}</Text>
             <Text className="sl-desc">
-              {done ? msg : `确认使用当前微信账号${scene.includes('bind') || true ? '' : ''}在你操作的端口${scene ? '' : ' '}完成登录 / 绑定？`}
+              {done ? msg : `确认使用当前微信账号在你操作的端口完成登录 / 绑定？`}
             </Text>
             {!done && scene && <Text className="sl-scene">请求 #{scene.slice(0, 12)}</Text>}
             {!done && (