diff --git a/apps/mini-user/src/app.tsx b/apps/mini-user/src/app.tsx
index a65b356..bd8cca0 100644
--- a/apps/mini-user/src/app.tsx
+++ b/apps/mini-user/src/app.tsx
@@ -1,3 +1,4 @@
+import './lib/intl-polyfill';
 import './lib/text-encoding-polyfill';
 import { PropsWithChildren, useRef } from 'react';
 import Taro, { useDidShow } from '@tarojs/taro';
diff --git a/apps/mini-user/src/lib/intl-polyfill.ts b/apps/mini-user/src/lib/intl-polyfill.ts
new file mode 100644
index 0000000..0858baa
--- /dev/null
+++ b/apps/mini-user/src/lib/intl-polyfill.ts
@@ -0,0 +1,72 @@
+/**
+ * 微信小程序基础库无 Intl。业务代码已避免依赖，此处仅作兜底，
+ * 防止旧包 / 依赖偶发 `new Intl.DateTimeFormat` 直接白屏。
+ */
+function pad(n: number) {
+  return String(n).padStart(2, '0');
+}
+
+function shanghaiParts(date: Date) {
+  const sh = new Date(date.getTime() + 8 * 60 * 60 * 1000);
+  return {
+    year: String(sh.getUTCFullYear()),
+    month: pad(sh.getUTCMonth() + 1),
+    day: pad(sh.getUTCDate()),
+    hour: pad(sh.getUTCHours()),
+    minute: pad(sh.getUTCMinutes()),
+    second: pad(sh.getUTCSeconds()),
+  };
+}
+
+function installIntlStub() {
+  const root = (typeof globalThis !== 'undefined'
+    ? globalThis
+    : typeof global !== 'undefined'
+      ? global
+      : typeof wx !== 'undefined'
+        ? wx
+        : {}) as typeof globalThis & { Intl?: typeof Intl };
+
+  if (typeof root.Intl !== 'undefined' && typeof root.Intl.DateTimeFormat === 'function') {
+    return;
+  }
+
+  class MiniDateTimeFormat {
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    constructor(_locales?: string | string[], _options?: Record<string, unknown>) {}
+
+    format(date?: Date | number) {
+      const d = date instanceof Date ? date : new Date(date ?? Date.now());
+      if (Number.isNaN(d.getTime())) return '';
+      const p = shanghaiParts(d);
+      return `${p.year}-${p.month}-${p.day} ${p.hour}:${p.minute}:${p.second}`;
+    }
+
+    formatToParts(date?: Date | number) {
+      const d = date instanceof Date ? date : new Date(date ?? Date.now());
+      if (Number.isNaN(d.getTime())) return [];
+      const p = shanghaiParts(d);
+      return [
+        { type: 'year', value: p.year },
+        { type: 'literal', value: '-' },
+        { type: 'month', value: p.month },
+        { type: 'literal', value: '-' },
+        { type: 'day', value: p.day },
+        { type: 'literal', value: ' ' },
+        { type: 'hour', value: p.hour },
+        { type: 'literal', value: ':' },
+        { type: 'minute', value: p.minute },
+        { type: 'literal', value: ':' },
+        { type: 'second', value: p.second },
+      ];
+    }
+  }
+
+  root.Intl = {
+    DateTimeFormat: MiniDateTimeFormat,
+  } as unknown as typeof Intl;
+}
+
+installIntlStub();
+
+export {};
diff --git a/apps/mini-user/src/lib/money.ts b/apps/mini-user/src/lib/money.ts
new file mode 100644
index 0000000..1b500dd
--- /dev/null
+++ b/apps/mini-user/src/lib/money.ts
@@ -0,0 +1,9 @@
+/** 金额展示（不依赖 Intl / toLocaleString，兼容微信小程序） */
+export function formatMoney(amount: number | string): string {
+  const n = typeof amount === 'number' ? amount : Number(amount);
+  if (!Number.isFinite(n)) return '0.00';
+  const fixed = n.toFixed(2);
+  const [intPart, dec] = fixed.split('.');
+  const withComma = intPart.replace(/\B(?=(\d{3})+(?!\d))/g, ',');
+  return `${withComma}.${dec}`;
+}
diff --git a/apps/mini-user/src/pages/benefit/index.tsx b/apps/mini-user/src/pages/benefit/index.tsx
index 85e034c..83c4108 100644
--- a/apps/mini-user/src/pages/benefit/index.tsx
+++ b/apps/mini-user/src/pages/benefit/index.tsx
@@ -12,6 +12,7 @@ import {
   DEFAULT_SHARE_TITLE,
   toWeappShareMessage,
 } from '../../lib/wechat-share';
+import { formatMoney } from '../../lib/money';
 import iconBenefit from '../../assets/tabbar/benefit-active.png';
 
 type BenefitSummary = {
@@ -38,10 +39,6 @@ type RedeemHistoryItem = {
   createdAt: string;
 };
 
-function formatMoney(amount: number) {
-  return amount.toLocaleString('zh-CN', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
-}
-
 function usagePercent(coupon: CouponItem) {
   const total = Number(coupon.totalAmount);
   if (total <= 0) return 0;
diff --git a/apps/mini-user/src/pages/mine/index.tsx b/apps/mini-user/src/pages/mine/index.tsx
index 397e29d..6257404 100644
--- a/apps/mini-user/src/pages/mine/index.tsx
+++ b/apps/mini-user/src/pages/mine/index.tsx
@@ -37,6 +37,7 @@ import iconStores from '../../assets/icons/可用门店.png';
 import iconCs from '../../assets/icons/联系客服.png';
 import iconQualification from '../../assets/icons/资质公示.png';
 import iconAbout from '../../assets/icons/关于我们.png';
+import { formatMoney } from '../../lib/money';
 
 const ORDER_SHORTCUTS = [
   { tab: 'pending_pay', icon: iconPendingPay, label: '待付款' },
@@ -54,10 +55,6 @@ const SERVICES = [
 
 const isWeapp = process.env.TARO_ENV === 'weapp';
 
-function formatMoney(amount: number) {
-  return amount.toLocaleString('zh-CN', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
-}
-
 export default function MinePage() {
   const [authed, setAuthed] = useState(() => isLoggedIn());
   const [profile, setProfile] = useState<UserProfile | null>(null);
diff --git a/apps/mini-user/src/pages/redeem-code/index.tsx b/apps/mini-user/src/pages/redeem-code/index.tsx
index e7cde41..0e7e23b 100644
--- a/apps/mini-user/src/pages/redeem-code/index.tsx
+++ b/apps/mini-user/src/pages/redeem-code/index.tsx
@@ -6,6 +6,7 @@ import PageShell from '../../components/PageShell';
 import RedeemQrCode from '../../components/RedeemQrCode';
 import SubPageHeader from '../../components/SubPageHeader';
 import { request, toast } from '../../lib/api';
+import { formatMoney } from '../../lib/money';
 
 const POLL_INTERVAL_MS = 2500;
 const LAST_REDEEM_RECORD_KEY = 'lastRedeemRecordId';
@@ -26,10 +27,6 @@ type RedeemTokenStatus =
     }
   | { status: 'EXPIRED' };
 
-function formatMoney(amount: number) {
-  return amount.toLocaleString('zh-CN', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
-}
-
 function formatTimer(seconds: number) {
   const mins = Math.floor(seconds / 60);
   const secs = seconds % 60;
diff --git a/apps/mini-user/src/pages/redeem-success/index.tsx b/apps/mini-user/src/pages/redeem-success/index.tsx
index bcf392f..890640b 100644
--- a/apps/mini-user/src/pages/redeem-success/index.tsx
+++ b/apps/mini-user/src/pages/redeem-success/index.tsx
@@ -5,6 +5,7 @@ import PageShell from '../../components/PageShell';
 import SubPageHeader from '../../components/SubPageHeader';
 import { request, toast } from '../../lib/api';
 import { formatShanghaiDateTime } from '../../lib/datetime';
+import { formatMoney } from '../../lib/money';
 
 const LAST_REDEEM_RESULT_KEY = 'lastRedeemResult';
 
@@ -17,15 +18,6 @@ type RedeemRecord = {
   createdAt: string;
 };
 
-function formatMoney(amount: number) {
-  const n = Number(amount);
-  if (!Number.isFinite(n)) return '0.00';
-  const fixed = n.toFixed(2);
-  const [intPart, dec] = fixed.split('.');
-  const withComma = intPart.replace(/\B(?=(\d{3})+(?!\d))/g, ',');
-  return `${withComma}.${dec}`;
-}
-
 /** 与权益「历史记录」一致：2026-08-03 13:53:03（Asia/Shanghai） */
 function formatChinaDateTime(input?: string | null) {
   return formatShanghaiDateTime(input ?? new Date());
diff --git a/apps/mini-user/src/pages/redeem/index.tsx b/apps/mini-user/src/pages/redeem/index.tsx
index 86206dc..c7af0c0 100644
--- a/apps/mini-user/src/pages/redeem/index.tsx
+++ b/apps/mini-user/src/pages/redeem/index.tsx
@@ -5,6 +5,7 @@ import PageShell from '../../components/PageShell';
 import SubPageHeader from '../../components/SubPageHeader';
 import { goLogin } from '../../lib/auth-nav';
 import { isLoggedIn, request, toast } from '../../lib/api';
+import { formatMoney } from '../../lib/money';
 
 type BenefitSummary = {
   totalBalance: number;
@@ -13,10 +14,6 @@ type BenefitSummary = {
 
 const MIN_REDEEM_AMOUNT = 0.01;
 
-function formatMoney(amount: number) {
-  return amount.toLocaleString('zh-CN', { minimumFractionDigits: 2, maximumFractionDigits: 2 });
-}
-
 /**
  * 核销金额输入清洗：
  * - 只保留数字与一个小数点
diff --git a/apps/mini-user/src/pages/store-detail/index.tsx b/apps/mini-user/src/pages/store-detail/index.tsx
index 0b03c8f..a482e62 100644
--- a/apps/mini-user/src/pages/store-detail/index.tsx
+++ b/apps/mini-user/src/pages/store-detail/index.tsx
@@ -104,9 +104,14 @@ function formatRedeemAmountYuan(amount: number | string) {
 
 function formatRecentRedeemLine(row: RecentRedeem) {
   try {
+    // 优先用服务端拼好的 text，避免客户端时区 / Intl 差异
     if (row.text?.trim()) return row.text.trim();
     const label = String(row.userLabel || '用户***').trim() || '用户***';
-    const time = formatRedeemTime(row.createdAt);
+    const rawTime = String(row.createdAt || '').trim();
+    const time =
+      /^\d{4}-\d{2}-\d{2}/.test(rawTime)
+        ? rawTime.slice(0, 19).replace('T', ' ')
+        : formatRedeemTime(row.createdAt);
     const amount = formatRedeemAmountYuan(row.amount);
     return `${label} ${time} 核销${amount}元`;
   } catch {