diff --git a/inventory-backend/app/api/v1/outbound.py b/inventory-backend/app/api/v1/outbound.py
index d3e5019..b5896ed 100644
--- a/inventory-backend/app/api/v1/outbound.py
+++ b/inventory-backend/app/api/v1/outbound.py
@@ -238,6 +238,10 @@ def get_outbound_list():
         keyword = request.args.get('keyword', '')
         search_type = request.args.get('search_type', 'all')
         company = request.args.get('company', '')
+        # ★ 出库日期范围：前端 el-date-picker 传 10 位 YYYY-MM-DD，
+        #   时分秒补全在 service 层完成（与 /returns 等处口径一致）
+        start_date = (request.args.get('start_date') or '').strip()
+        end_date = (request.args.get('end_date') or '').strip()
 
         # ★ 高级筛选：JSON 字符串 → 条件列表（解析失败退化为空，不影响主查询）
         from app.utils.advanced_filter import parse_advanced_filters
@@ -259,6 +263,7 @@ def get_outbound_list():
         # ★ [修改] 调用分组查询服务，支持搜索类型
         result = OutboundService.get_grouped_list(
             page, limit, keyword, search_type=search_type,
+            start_date=start_date, end_date=end_date,
             company=company, consumer_name=consumer_name,
             advanced_filters=advanced_filters,
         )
diff --git a/inventory-backend/app/services/outbound_service.py b/inventory-backend/app/services/outbound_service.py
index 6b86b92..7b03c33 100644
--- a/inventory-backend/app/services/outbound_service.py
+++ b/inventory-backend/app/services/outbound_service.py
@@ -708,8 +708,11 @@ class OutboundService:
                     )
                     continue
 
-        if start_date and end_date:
-            stmt = stmt.filter(TransOutbound.outbound_time.between(start_date, end_date))
+        # ★ 日期边界分别判断：用 BETWEEN 时若只传一侧会整段静默失效
+        if start_date:
+            stmt = stmt.filter(TransOutbound.outbound_time >= start_date)
+        if end_date:
+            stmt = stmt.filter(TransOutbound.outbound_time <= end_date)
 
         # 【行级数据隔离】应用公司过滤到主查询
         if company_limit is not None: