diff --git a/sf_dlm/models/__init__.py b/sf_dlm/models/__init__.py
index 6619bd58..f5b994b6 100644
--- a/sf_dlm/models/__init__.py
+++ b/sf_dlm/models/__init__.py
@@ -1 +1,3 @@
 from . import product_supplierinfo
+from . import stock_rule_inherit
+
diff --git a/sf_dlm/models/stock_rule_inherit.py b/sf_dlm/models/stock_rule_inherit.py
new file mode 100644
index 00000000..d20fcd58
--- /dev/null
+++ b/sf_dlm/models/stock_rule_inherit.py
@@ -0,0 +1,35 @@
+from odoo import models, fields, api, _
+
+
+class StockRuleInherit(models.Model):
+    _inherit = 'stock.rule'
+
+    @api.model
+    def _run_buy(self, procurements):
+        # 首先调用父类的 _run_buy 方法，以保留原有逻辑
+        super(StockRuleInherit, self)._run_buy(procurements)
+
+        # 然后在这里添加自定义的逻辑
+        for procurement, rule in procurements:
+            product = procurement.product_id
+            # 获取主 BOM
+            bom = self.env['mrp.bom'].search([('product_tmpl_id', '=', product.product_tmpl_id.id)], limit=1)
+
+            if bom:
+                # 遍历 BOM 中的组件（即坯料等）
+                for line in bom.bom_line_ids:
+                    raw_material = line.product_id
+                    # 检查路线
+                    for route in raw_material.route_ids:
+                        # print('route.name:', route.name)
+                        if route.name == '按订单补给外包商':  # 或者用 route.id 检查精确的路线
+                            print("按订单补给外包商============是")
+                            # 使用 procurement.values['supplier'] 获取供应商
+                            supplier = procurement.values.get('supplier')
+                            if supplier:
+                                domain = rule._make_po_get_domain(procurement.company_id, procurement.values,
+                                                                  supplier.partner_id)
+                                po = self.env['purchase.order'].sudo().search([dom for dom in domain], limit=1)
+                                if po:
+                                    po.write({'purchase_type': 'consignment'})
+                            break