diff --git a/orders/management/commands/seed_fake_grab_orders.py b/orders/management/commands/seed_fake_grab_orders.py
index 231b334..7761889 100644
--- a/orders/management/commands/seed_fake_grab_orders.py
+++ b/orders/management/commands/seed_fake_grab_orders.py
@@ -7,7 +7,7 @@ from django.utils import timezone
 
 from orders.models import FakeGrabOrder
 
-DEFAULT_AVATAR = 'a_long/morentouxiang.jpg'
+DEFAULT_AVATAR = 'beijing/morentouxiang.jpg'
 
 COMMON_TAIL = (
     '下单凑七套，不卡保底,不要私藏变卖，私藏变卖老板必退款,'
diff --git a/orders/services/fake_order_pool.py b/orders/services/fake_order_pool.py
index ba59ae1..f2d24e3 100644
--- a/orders/services/fake_order_pool.py
+++ b/orders/services/fake_order_pool.py
@@ -12,7 +12,7 @@ from jituan.services.club_context import resolve_effective_club_id
 from jituan.services.dashou_exam import user_has_active_member
 from orders.models import FakeGrabOrder
 
-DEFAULT_DISPATCHER_AVATAR = 'a_long/morentouxiang.jpg'
+DEFAULT_DISPATCHER_AVATAR = 'beijing/morentouxiang.jpg'
 
 
 def dashou_should_use_fake_pool(user):
@@ -48,6 +48,7 @@ def _random_display_time_str():
 
 def _format_fake_row(row, display_time=None):
     """字段与 DashouDingdanHuoquView 真实单列表保持一致。"""
+    # 平台单用 tupian、商家单用 tupian + sj_avatar，统一默认头像
     avatar = DEFAULT_DISPATCHER_AVATAR
     platform = int(row.Platform or 1)
     oid = row.OrderID
diff --git a/orders/sql/update_fake_grab_order_avatar.sql b/orders/sql/update_fake_grab_order_avatar.sql
new file mode 100644
index 0000000..f5d9ae9
--- /dev/null
+++ b/orders/sql/update_fake_grab_order_avatar.sql
@@ -0,0 +1,6 @@
+-- 假单表 fake_grab_order：派单者头像字段 paidan_touxiang 全部改为 beijing 默认头像
+-- 执行前可先预览：
+-- SELECT id, dingdan_id, paidan_touxiang FROM fake_grab_order;
+
+UPDATE fake_grab_order
+SET paidan_touxiang = 'beijing/morentouxiang.jpg';
diff --git a/orders/views.py b/orders/views.py
index 4b85441..77d2735 100644
--- a/orders/views.py
+++ b/orders/views.py
@@ -3667,6 +3667,10 @@ class QiangdanView(APIView):
         if not dingdan_id:
             return Response({'code': 400, 'msg': '订单ID不能为空'}, status=400)
 
+        dingdan_id = str(dingdan_id).strip()
+        if dingdan_id.upper().startswith('JD'):
+            return Response({'code': 400, 'msg': '您没充值会员或保证金不可接单'})
+
         try:
             with transaction.atomic():
                 # 1. 验证打手身份和状态