diff --git a/app/services/order_service.py b/app/services/order_service.py
index 7d21e1a..ecae5a7 100644
--- a/app/services/order_service.py
+++ b/app/services/order_service.py
@@ -95,8 +95,8 @@ class OrderService:
             df_str = df_head.astype(str)
             
             # 1. 识别：烟草公司 (Tobacco)
-            # 特征：通常包含“烟草”、“卷烟”等关键字，且有特定的表头结构
-            is_tobacco = df_str.apply(lambda x: x.str.contains('烟草|卷烟|营销中心')).any().any()
+            # 特征：内容中包含“专卖证号”或特定证号“510109104938”
+            is_tobacco = df_str.apply(lambda x: x.str.contains('专卖证号|510109104938')).any().any()
             if is_tobacco:
                 logger.info("识别到烟草公司订单，执行专用预处理...")
                 from .tobacco_service import TobaccoService
@@ -104,8 +104,8 @@ class OrderService:
                 return tobacco_svc.process_tobacco_order(file_path)
 
             # 2. 识别：蓉城易购 (Rongcheng Yigou)
-            # 特征：通常文件名包含“订单”或内容包含“订购单位”等
-            is_rongcheng = df_str.apply(lambda x: x.str.contains('蓉城易购|订购单位|出库小计')).any().any()
+            # 特征：内容中包含单号标识“RCDH”
+            is_rongcheng = df_str.apply(lambda x: x.str.contains('RCDH')).any().any()
             if is_rongcheng:
                 logger.info("识别到蓉城易购订单，执行专用预处理...")
                 from .special_suppliers_service import SpecialSuppliersService