diff --git a/apps/backend/src/db/migrations/047_worker_order_list_performance.sql b/apps/backend/src/db/migrations/047_worker_order_list_performance.sql
new file mode 100644
index 00000000..4ca96727
--- /dev/null
+++ b/apps/backend/src/db/migrations/047_worker_order_list_performance.sql
@@ -0,0 +1,3 @@
+-- 打手订单列表按打手关联拼单记录，避免全表扫描后逐行查找拼单份额。
+CREATE INDEX IF NOT EXISTS idx_work_order_shares_worker_order
+  ON work_order_shares(worker_id, work_order_id);
diff --git a/apps/backend/src/repositories/worker-platform/work-order-repo.ts b/apps/backend/src/repositories/worker-platform/work-order-repo.ts
index a4216c41..6c975d33 100644
--- a/apps/backend/src/repositories/worker-platform/work-order-repo.ts
+++ b/apps/backend/src/repositories/worker-platform/work-order-repo.ts
@@ -139,23 +139,16 @@ function workOrderSearchExpression(alias = 'wo') {
 }
 
 /** 打手订单筛选使用个人份额状态，而不是拼单母工单的 open 状态。 */
-function workerOrderStatusExpression(workerIdPlaceholder: string) {
+function workerOrderStatusExpression(workerShareAlias = 'worker_share') {
   return `CASE
     WHEN wo.status IN ('accepted', 'cancelled', 'problem') THEN wo.status
-    ELSE COALESCE((
-      SELECT CASE wos.status
-        WHEN 'joined' THEN 'in_progress'
-        WHEN 'submitted' THEN 'pending_acceptance'
-        WHEN 'accepted' THEN 'accepted'
-        WHEN 'cancelled' THEN 'cancelled'
-        ELSE wo.status
-      END
-      FROM work_order_shares wos
-      WHERE wos.work_order_id = wo.id
-        AND wos.worker_id = ${workerIdPlaceholder}
-      ORDER BY wos.id DESC
-      LIMIT 1
-    ), wo.status)
+    ELSE COALESCE(CASE ${workerShareAlias}.status
+      WHEN 'joined' THEN 'in_progress'
+      WHEN 'submitted' THEN 'pending_acceptance'
+      WHEN 'accepted' THEN 'accepted'
+      WHEN 'cancelled' THEN 'cancelled'
+      ELSE wo.status
+    END, wo.status)
   END`
 }
 
@@ -1274,7 +1267,7 @@ export async function listWorkOrders({
   sort = 'id_desc',
 }: ListInput = {}): Promise<{ items: WorkOrderRow[]; total: number }> {
   const effectiveStatuses = statuses.length > 0 ? statuses : status.trim() ? [status.trim()] : []
-  const { whereClause, params } = buildWorkOrderWhere({
+  const { joins, whereClause, params } = buildWorkOrderWhere({
     statuses: effectiveStatuses,
     workOrderId,
     keyword,
@@ -1291,6 +1284,7 @@ export async function listWorkOrders({
     `
       SELECT COUNT(*)::int AS total
       FROM work_orders wo
+      ${joins}
       ${whereClause}
     `,
     params,
@@ -1321,6 +1315,7 @@ export async function listWorkOrders({
   params.push(pageSize, offset)
   const itemsResult = await query<WorkOrderRow>(
     `${WORK_ORDER_SELECT}
+     ${joins}
      ${whereClause}
      ORDER BY ${effectiveOrderBy}
      LIMIT $${params.length - 1} OFFSET $${params.length}`,
@@ -4368,6 +4363,19 @@ function buildWorkOrderWhere({
 }: ListInput) {
   const filters: string[] = []
   const params: unknown[] = []
+  let joins = ''
+  let workerSharePlaceholder = ''
+
+  // 拼单表在 (work_order_id, worker_id) 上唯一；提前按打手关联一次即可，
+  // 避免列表和 COUNT 查询对每一条工单重复执行相关子查询。
+  if (workerSharingId) {
+    params.push(workerSharingId)
+    workerSharePlaceholder = `$${params.length}`
+    joins = `
+      LEFT JOIN work_order_shares worker_share
+        ON worker_share.work_order_id = wo.id
+        AND worker_share.worker_id = ${workerSharePlaceholder}`
+  }
   const normalizedStatuses = [
     ...new Set(statuses.map((item) => String(item || '').trim()).filter(Boolean)),
   ]
@@ -4390,9 +4398,8 @@ function buildWorkOrderWhere({
     params.push(normalizedStatuses)
     const statusesPlaceholder = `$${params.length}`
     if (workerSharingId) {
-      params.push(workerSharingId)
       filters.push(
-        `${workerOrderStatusExpression(`$${params.length}`)} = ANY(${statusesPlaceholder}::text[])`,
+        `${workerOrderStatusExpression()} = ANY(${statusesPlaceholder}::text[])`,
       )
     } else {
       filters.push(
@@ -4445,11 +4452,10 @@ function buildWorkOrderWhere({
     filters.push(`wo.category_id = $${params.length}`)
   }
   if (workerSharingId) {
-    params.push(workerSharingId)
     filters.push(
-      `(wo.assigned_worker_id = $${params.length}
+      `(wo.assigned_worker_id = ${workerSharePlaceholder}
         OR (
-          wo.last_assigned_worker_id = $${params.length}
+          wo.last_assigned_worker_id = ${workerSharePlaceholder}
           AND (
             wo.status <> 'open'
             OR EXISTS (
@@ -4460,10 +4466,7 @@ function buildWorkOrderWhere({
             )
           )
         )
-        OR wo.id IN (
-          SELECT work_order_id FROM work_order_shares
-          WHERE worker_id = $${params.length} AND status != 'cancelled'
-        ))`,
+        OR (worker_share.work_order_id IS NOT NULL AND worker_share.status != 'cancelled'))`,
     )
   }
   if (visibleAfterIso) {
@@ -4482,6 +4485,7 @@ function buildWorkOrderWhere({
     )`)
   }
   return {
+    joins,
     whereClause: filters.length > 0 ? `WHERE ${filters.join(' AND ')}` : '',
     params,
   }
diff --git a/apps/frontend/src/pages/worker/WorkerHallPage.tsx b/apps/frontend/src/pages/worker/WorkerHallPage.tsx
index 90a7e316..2bf807eb 100644
--- a/apps/frontend/src/pages/worker/WorkerHallPage.tsx
+++ b/apps/frontend/src/pages/worker/WorkerHallPage.tsx
@@ -30,6 +30,7 @@ import {
   fetchWorkerHallOrders,
   fetchWorkerHallLeaderboard,
   fetchWorkerMyOrders,
+  fetchWorkerMyOrderOverview,
   fetchWorkerProfile,
   grabWorkerOrder,
   joinWorkerSharingOrder,
@@ -93,25 +94,14 @@ export default function WorkerHallPage() {
   const hallSummaryQuery = useQuery({
     queryKey: ['worker-hall-summary'],
     queryFn: async () => {
-      const [pendingAcceptanceResponse, problemResponse] = await Promise.all([
-        fetchWorkerMyOrders({
-          status: 'pending_acceptance',
-          page: 1,
-          pageSize: 1,
-        }),
-        fetchWorkerMyOrders({
-          status: 'problem',
-          page: 1,
-          pageSize: 1,
-        }),
-      ])
-
-      const pendingAcceptanceCount = pendingAcceptanceResponse.data.pagination.total
-      const problemCount = problemResponse.data.pagination.total
+      const response = await fetchWorkerMyOrderOverview()
+      const summaryByStatus = new Map(
+        response.data.items.map((item) => [item.status, item.orderCount]),
+      )
 
       return {
-        pendingAcceptanceCount,
-        problemCount,
+        pendingAcceptanceCount: Number(summaryByStatus.get('pending_acceptance') || 0),
+        problemCount: Number(summaryByStatus.get('problem') || 0),
       } satisfies HallSummary
     },
     retry: false,