diff --git a/packages/app/src/pages/admin/orders.vue b/packages/app/src/pages/admin/orders.vue
index 08a2406..b0853cc 100644
--- a/packages/app/src/pages/admin/orders.vue
+++ b/packages/app/src/pages/admin/orders.vue
@@ -1,5 +1,5 @@
 <template>
-  <view class="page" :style="{ paddingTop: navBarHeight }">
+  <view class="page" :style="{ '--status-bar': statusBarHeight + 'px' }">
     <CustomNavBar title="订单管理" show-back />
 
     <!-- Summary stats bar -->
@@ -106,14 +106,14 @@
               </view>
               <view class="info-right">
                 <text class="info-label">下单时间</text>
-                <text class="info-value">{{ formatDate(order.createdAt) }}</text>
+                <text class="info-value">{{ formatDateTime(order.createdAt) }}</text>
               </view>
             </view>
 
             <!-- Paid time if available -->
             <view v-if="order.paidAt && order.status === OrderStatus.PAID" class="info-row">
               <text class="info-label">支付时间</text>
-              <text class="info-value">{{ formatDate(order.paidAt) }}</text>
+              <text class="info-value">{{ formatDateTime(order.paidAt) }}</text>
             </view>
           </view>
         </view>
@@ -133,19 +133,21 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted } from 'vue'
+import { ref, computed, onMounted } from 'vue'
 import CustomNavBar from '../../components/CustomNavBar.vue'
-import { getSystemLayout } from '../../utils/system'
 import { useAdminStore } from '../../stores/admin'
-import { formatPrice, formatDate } from '../../utils/format'
+import { formatPrice, formatDateTime } from '../../utils/format'
 import { OrderStatus } from '@mp-pilates/shared'
 import type { OrderWithDetails } from '@mp-pilates/shared'
 
 const adminStore = useAdminStore()
 
-const navBarHeight = ref('64px')
+// 动态计算顶部模块高度
+const statusBarHeight = ref(0)
+
 onMounted(() => {
-  navBarHeight.value = `${getSystemLayout().navBarHeight}px`
+  const windowInfo = uni.getWindowInfo()
+  statusBarHeight.value = windowInfo.statusBarHeight ?? 20
 })
 
 const filters = [
@@ -165,6 +167,21 @@ const totalCount = ref<number | null>(null)
 const paidCount = ref<number | null>(null)
 const pendingCount = ref<number | null>(null)
 
+// 每个 tab 单独缓存数据
+const orderCache: Record<string, { items: OrderWithDetails[]; total: number; page: number; hasMore: boolean }> = {}
+
+function getCacheKey(filter: string): string {
+  return filter || 'all'
+}
+
+function getCachedData(filter: string) {
+  return orderCache[getCacheKey(filter)]
+}
+
+function setCachedData(filter: string, data: { items: OrderWithDetails[]; total: number; page: number; hasMore: boolean }) {
+  orderCache[getCacheKey(filter)] = data
+}
+
 const LIMIT = 20
 
 function statusLabel(s: string) {
@@ -191,23 +208,45 @@ function statusAccentClass(s: string) {
 }
 
 async function loadOrders(reset = false) {
+  const filter = activeFilter.value
+
+  // 如果有缓存且是重置（切换tab），直接用缓存数据
+  if (reset) {
+    const cached = getCachedData(filter)
+    if (cached) {
+      orders.value = [...cached.items]
+      hasMore.value = cached.hasMore
+      page.value = cached.page
+      return
+    }
+  }
+
+  // 初始加载或下拉刷新，需要请求接口
   if (loading.value) return
   if (reset) page.value = 1
+
   loading.value = true
   try {
     const params: { page: number; limit: number; status?: string } = {
       page: page.value,
       limit: LIMIT,
     }
-    if (activeFilter.value) params.status = activeFilter.value
+    if (filter) params.status = filter
     const result = await adminStore.fetchAdminOrders(params)
-    if (reset) {
-      orders.value = [...result.items]
-    } else {
-      orders.value.push(...result.items)
-    }
-    hasMore.value = orders.value.length < result.total
-    totalCount.value = result.total
+
+    const newItems = reset ? [...result.items] : [...orders.value, ...result.items]
+    const newHasMore = newItems.length < result.total
+
+    // 缓存数据
+    setCachedData(filter, {
+      items: newItems,
+      total: result.total,
+      page: page.value,
+      hasMore: newHasMore,
+    })
+
+    orders.value = newItems
+    hasMore.value = newHasMore
   } catch {
     uni.showToast({ title: '加载失败', icon: 'none' })
   } finally {
@@ -216,30 +255,79 @@ async function loadOrders(reset = false) {
   }
 }
 
-async function loadSummaryCounts() {
+// 初始加载所有分类的数据
+async function loadAllFiltersData() {
+  loading.value = true
   try {
-    const [allResult, paidResult, pendingResult] = await Promise.all([
-      adminStore.fetchAdminOrders({ page: 1, limit: 1 }),
-      adminStore.fetchAdminOrders({ page: 1, limit: 1, status: OrderStatus.PAID }),
-      adminStore.fetchAdminOrders({ page: 1, limit: 1, status: OrderStatus.PENDING }),
+    // 并行请求所有分类（第一页数据）
+    const [allResult, paidResult, pendingResult, refundedResult] = await Promise.all([
+      adminStore.fetchAdminOrders({ page: 1, limit: LIMIT }),
+      adminStore.fetchAdminOrders({ page: 1, limit: LIMIT, status: OrderStatus.PAID }),
+      adminStore.fetchAdminOrders({ page: 1, limit: LIMIT, status: OrderStatus.PENDING }),
+      adminStore.fetchAdminOrders({ page: 1, limit: LIMIT, status: OrderStatus.REFUNDED }),
     ])
+
+    // 缓存全部
+    setCachedData('', {
+      items: [...allResult.items],
+      total: allResult.total,
+      page: 1,
+      hasMore: allResult.items.length < allResult.total,
+    })
     totalCount.value = allResult.total
+
+    // 缓存已支付
+    setCachedData(OrderStatus.PAID, {
+      items: [...paidResult.items],
+      total: paidResult.total,
+      page: 1,
+      hasMore: paidResult.items.length < paidResult.total,
+    })
     paidCount.value = paidResult.total
+
+    // 缓存待支付
+    setCachedData(OrderStatus.PENDING, {
+      items: [...pendingResult.items],
+      total: pendingResult.total,
+      page: 1,
+      hasMore: pendingResult.items.length < pendingResult.total,
+    })
     pendingCount.value = pendingResult.total
+
+    // 缓存已退款
+    setCachedData(OrderStatus.REFUNDED, {
+      items: [...refundedResult.items],
+      total: refundedResult.total,
+      page: 1,
+      hasMore: refundedResult.items.length < refundedResult.total,
+    })
+
+    // 设置当前 tab 的数据
+    orders.value = [...allResult.items]
+    hasMore.value = allResult.items.length < allResult.total
   } catch {
-    // non-critical, ignore
+    uni.showToast({ title: '加载失败', icon: 'none' })
+  } finally {
+    loading.value = false
+    refreshing.value = false
   }
 }
 
 function selectFilter(value: string) {
   activeFilter.value = value
-  totalCount.value = null
-  loadOrders(true)
+  // 切换 tab 直接从缓存读取
+  const cached = getCachedData(value)
+  if (cached) {
+    orders.value = [...cached.items]
+    hasMore.value = cached.hasMore
+    page.value = cached.page
+  }
 }
 
 async function onRefresh() {
   refreshing.value = true
-  await Promise.all([loadOrders(true), loadSummaryCounts()])
+  // 下拉刷新重新请求所有分类的数据
+  await loadAllFiltersData()
 }
 
 function loadMore() {
@@ -249,8 +337,7 @@ function loadMore() {
 }
 
 onMounted(() => {
-  loadOrders(true)
-  loadSummaryCounts()
+  loadAllFiltersData()
 })
 </script>
 
@@ -266,13 +353,18 @@ onMounted(() => {
 
 /* ── Stats bar ──────────────────────────────── */
 .stats-bar {
+  position: fixed;
+  top: calc(var(--status-bar) + 44px);
+  left: 0;
+  right: 0;
   display: flex;
   align-items: center;
+  height: 96rpx;
   background: #FFFFFF;
-  padding: 28rpx 0;
-  margin: 0;
+  padding: 0;
   border-bottom: 1rpx solid rgba(180, 160, 130, 0.2);
   box-shadow: 0 2rpx 12rpx rgba(180, 160, 130, 0.08);
+  z-index: 100;
 }
 
 .stat-item {
@@ -309,9 +401,13 @@ onMounted(() => {
 
 /* ── Filter pills ───────────────────────────── */
 .filter-wrap {
+  position: fixed;
+  top: calc(var(--status-bar) + 92px);
+  left: 0;
+  right: 0;
   background: #FAF8F5;
   border-bottom: 1rpx solid rgba(180, 160, 130, 0.15);
-  flex-shrink: 0;
+  z-index: 99;
 }
 
 .filter-scroll { overflow: hidden; }
@@ -364,7 +460,11 @@ onMounted(() => {
 
 /* ── List ───────────────────────────────────── */
 .list-scroll {
-  flex: 1;
+  position: fixed;
+  top: calc(var(--status-bar) + 144px);
+  left: 0;
+  right: 0;
+  bottom: 0;
   overflow: hidden;
 }
 
diff --git a/packages/app/src/stores/admin.ts b/packages/app/src/stores/admin.ts
index f5c0219..1fa9b6e 100644
--- a/packages/app/src/stores/admin.ts
+++ b/packages/app/src/stores/admin.ts
@@ -120,7 +120,10 @@ export const useAdminStore = defineStore('admin', () => {
     limit?: number
     status?: string
   }): Promise<PaginatedData<OrderWithDetails>> {
-    return get<PaginatedData<OrderWithDetails>>('/admin/orders', params)
+    console.log('[admin] fetchAdminOrders params:', params)
+    const result = await get<PaginatedData<OrderWithDetails>>('/admin/orders', params)
+    console.log('[admin] fetchAdminOrders result:', result)
+    return result
   }
 
   // ── Bookings ─────────────────────────────────────────────────────
diff --git a/packages/app/src/utils/format.ts b/packages/app/src/utils/format.ts
index fcdac1b..c86ed3d 100644
--- a/packages/app/src/utils/format.ts
+++ b/packages/app/src/utils/format.ts
@@ -135,14 +135,15 @@ export function getStockPercent(soldCount: number, totalStock: number): string {
   return `${Math.min(100, getStockRatio(soldCount, totalStock) * 100)}%`
 }
 
-/** 格式化日期时间为 MM-DD HH:mm */
+/** 格式化日期时间为 MM-DD HH:mm:ss */
 export function formatDateTime(dateStr: string): string {
   const d = new Date(dateStr)
   const month = String(d.getMonth() + 1).padStart(2, '0')
   const day = String(d.getDate()).padStart(2, '0')
   const hour = String(d.getHours()).padStart(2, '0')
   const min = String(d.getMinutes()).padStart(2, '0')
-  return `${month}-${day} ${hour}:${min}`
+  const sec = String(d.getSeconds()).padStart(2, '0')
+  return `${month}-${day} ${hour}:${min}:${sec}`
 }
 
 /** 格式化 Date 为 YYYY-MM-DD（本地时间，用于 picker） */
diff --git a/packages/server/src/payment/payment.service.ts b/packages/server/src/payment/payment.service.ts
index 033d716..062075a 100644
--- a/packages/server/src/payment/payment.service.ts
+++ b/packages/server/src/payment/payment.service.ts
@@ -15,7 +15,7 @@ export interface CreateOrderResult {
 }
 
 export interface PaginatedOrders<T> {
-  data: T[]
+  items: T[]
   total: number
   page: number
   limit: number
@@ -176,7 +176,7 @@ export class PaymentService {
     ])
 
     return {
-      data: data.map((o) => ({ ...o, cardType: { ...o.cardType } })),
+      items: data.map((o) => ({ ...o, cardType: { ...o.cardType } })),
       total,
       page,
       limit,
@@ -207,8 +207,9 @@ export class PaymentService {
       this.prisma.order.count({ where }),
     ])
 
+    this.logger.log(`getAllOrders: page=${page}, limit=${limit}, status=${status}, count=${total}`)
     return {
-      data: data.map((o) => ({
+      items: data.map((o) => ({
         ...o,
         cardType: { ...o.cardType },
         user: { ...o.user },