diff --git a/apps/backend/src/services/worker-platform/admin-mock-work-order-service.ts b/apps/backend/src/services/worker-platform/admin-mock-work-order-service.ts
index bed17a70..33fa9375 100644
--- a/apps/backend/src/services/worker-platform/admin-mock-work-order-service.ts
+++ b/apps/backend/src/services/worker-platform/admin-mock-work-order-service.ts
@@ -105,7 +105,8 @@ export async function createAdminMockWorkOrder(payload: JsonObject = {}) {
       platformOrderId,
       productName,
       rewardAmount,
-      sellerId: String(shop.sellerId || shop.shopId || '').trim(),
+      sellerId: String(shop.sellerId || '').trim(),
+      shopName: String(shop.shopName || '').trim(),
     }),
     now,
   })
@@ -133,31 +134,36 @@ export function resolveAdminMockWorkOrderInput(
     })
   }
 
-  const shopId = String(payload.sellerId || payload.shopId || '').trim()
-  if (!shopId) {
-    throw createHttpError('请选择店铺', {
+  const shopIdentity = String(payload.sellerId || payload.shopId || '').trim()
+  if (!shopIdentity) {
+    throw createHttpError('请选择或输入店铺', {
       statusCode: 400,
       errorCode: 'mock_work_order_shop_required',
     })
   }
-  const shop =
+  const matchedShop =
     shops.find(
       (item) =>
-        String(item.sellerId || item.shopId || '').trim() === shopId ||
-        String(item.shopId || '').trim() === shopId,
+        String(item.sellerId || item.shopId || '').trim() === shopIdentity ||
+        String(item.shopId || '').trim() === shopIdentity,
     ) || null
-  if (!shop) {
-    throw createHttpError('所选店铺不存在', {
-      statusCode: 400,
-      errorCode: 'mock_work_order_shop_invalid',
-    })
-  }
-  if (shop.enabled === false) {
+  if (matchedShop?.enabled === false) {
     throw createHttpError('所选店铺已停用', {
       statusCode: 409,
       errorCode: 'mock_work_order_shop_disabled',
     })
   }
+  // 未命中已配置店铺时视为自定义店铺（用于其他平台订单手动录入），
+  // 与真实店铺一样落入 material.source，保证链路与展示一致。
+  const shop =
+    matchedShop ||
+    ({
+      enabled: true,
+      sellerId: '',
+      shopId: '',
+      shopName: shopIdentity.slice(0, 64),
+      customShopName: shopIdentity.slice(0, 64),
+    } as KuaishouIndustryShopConfig)
 
   return {
     platformOrderId,
diff --git a/apps/backend/src/services/worker-platform/worker-platform-service.test.ts b/apps/backend/src/services/worker-platform/worker-platform-service.test.ts
index 402265f4..9d1f51bb 100644
--- a/apps/backend/src/services/worker-platform/worker-platform-service.test.ts
+++ b/apps/backend/src/services/worker-platform/worker-platform-service.test.ts
@@ -276,10 +276,15 @@ test('本地 Mock 工单要求订单、店铺、商品与两个金额完整有
       resolveAdminMockWorkOrderInput({ platformOrderId: 'MOCK-1', productName: '测试商品' }, shops),
     { errorCode: 'mock_work_order_shop_required' },
   )
-  assert.throws(
-    () => resolveAdminMockWorkOrderInput({ ...baseInput, sellerId: 'unknown' }, shops),
-    { errorCode: 'mock_work_order_shop_invalid' },
-  )
+  // 未命中已配置店铺时按自定义店铺放行，便于其他平台订单手动录入
+  {
+    const customShop = resolveAdminMockWorkOrderInput(
+      { ...baseInput, sellerId: '抖音自定义小店' },
+      shops,
+    )
+    assert.equal(customShop.shop.shopName, '抖音自定义小店')
+    assert.equal(customShop.shop.sellerId, '')
+  }
   assert.throws(
     () => resolveAdminMockWorkOrderInput({ ...baseInput, sellerId: 'seller-disabled' }, shops),
     { errorCode: 'mock_work_order_shop_disabled' },
diff --git a/apps/frontend/src/pages/admin/panels/WorkOrderPanelParts.tsx b/apps/frontend/src/pages/admin/panels/WorkOrderPanelParts.tsx
index 682c4142..1f3a78d9 100644
--- a/apps/frontend/src/pages/admin/panels/WorkOrderPanelParts.tsx
+++ b/apps/frontend/src/pages/admin/panels/WorkOrderPanelParts.tsx
@@ -1,6 +1,6 @@
 import { PlusOutlined } from '@ant-design/icons'
 import { useQuery } from '@tanstack/react-query'
-import { App, Button, Card, Form, Input, InputNumber, Select, Switch } from 'antd'
+import { App, AutoComplete, Button, Card, Form, Input, InputNumber, Select, Switch } from 'antd'
 import { useState } from 'react'
 
 import { createAdminMockWorkOrder } from '@/services/admin'
@@ -105,14 +105,21 @@ export function MockWorkOrderForm({ onCreated }: { onCreated: () => Promise<void
         className="worker-order-mock-field-shop"
         label="店铺"
         name="sellerId"
-        rules={[{ required: true, message: '请选择店铺' }]}
+        rules={[{ required: true, whitespace: true, message: '请选择或输入店铺' }]}
       >
-        <Select
-          showSearch
-          optionFilterProp="label"
-          loading={shopsQuery.isLoading}
+        <AutoComplete
           options={shopOptions}
-          placeholder={shopOptions.length > 0 ? '请选择店铺' : '暂无可用店铺'}
+          filterOption={(inputValue, option) =>
+            String(option?.label ?? '')
+              .toLowerCase()
+              .includes(inputValue.toLowerCase()) ||
+            String(option?.value ?? '')
+              .toLowerCase()
+              .includes(inputValue.toLowerCase())
+          }
+          placeholder={
+            shopOptions.length > 0 ? '选择已配置店铺，或直接输入自定义店铺' : '输入自定义店铺'
+          }
         />
       </Form.Item>
       <Form.Item