diff --git a/inventory-backend/app/api/v1/inbound/stock.py b/inventory-backend/app/api/v1/inbound/stock.py
index 52c69f2..89a81ab 100644
--- a/inventory-backend/app/api/v1/inbound/stock.py
+++ b/inventory-backend/app/api/v1/inbound/stock.py
@@ -293,11 +293,17 @@ def _do_get_stock_list(permission_prefix=None):
         # ★ Fail-Closed: 选单/借用场景默认剥离所有价格成本字段
         _strip_price_fields = _make_price_stripper(permission_prefix)
 
+        # ★ 行级公司隔离：普通用户只能看到本公司的库存（超管/跨域不受限）
+        from app.utils.decorators import get_current_company_filter
+        company_limit = get_current_company_filter()
+
         all_items = []
 
         # 1. 采购件
         if StockBuy:
             q = StockBuy.query.filter(StockBuy.stock_quantity > 0)
+            if company_limit is not None:
+                q = q.filter(StockBuy.base.has(MaterialBase.company_name == company_limit))
             if keyword:
                 q = q.filter(
                     db.or_(
@@ -322,6 +328,8 @@ def _do_get_stock_list(permission_prefix=None):
         if StockSemi:
             try:
                 q = StockSemi.query.filter(StockSemi.stock_quantity > 0)
+                if company_limit is not None:
+                    q = q.filter(StockSemi.base.has(MaterialBase.company_name == company_limit))
                 if keyword:
                     q = q.filter(
                         db.or_(
@@ -347,6 +355,8 @@ def _do_get_stock_list(permission_prefix=None):
                 # 3. 成品
         if StockProduct:
             q = StockProduct.query.filter(StockProduct.stock_quantity > 0)
+            if company_limit is not None:
+                q = q.filter(StockProduct.base.has(MaterialBase.company_name == company_limit))
             if keyword:
                 q = q.filter(
                     db.or_(