diff --git a/inventory-backend/app/services/inbound/base_service.py b/inventory-backend/app/services/inbound/base_service.py
index a759821..411dae8 100644
--- a/inventory-backend/app/services/inbound/base_service.py
+++ b/inventory-backend/app/services/inbound/base_service.py
@@ -178,7 +178,8 @@ class MaterialBaseService:
                 if filters.get('isEnabled') is not None:
                     val_str = str(filters['isEnabled']).lower()
                     is_active = val_str in ['1', 'true', 'yes', 't']
-                    query = query.filter_by(is_enabled=is_active)
+                    # 必须使用 filter() 而非 filter_by()，因为 query 是 join 后的复杂查询
+                    query = query.filter(MaterialBase.is_enabled == is_active)
 
                 # 3. 高级动态筛选
                 advanced_filters = filters.get('advancedFilters', [])