diff --git a/jikimo_sale_multiple_supply_methods/models/mrp_bom.py b/jikimo_sale_multiple_supply_methods/models/mrp_bom.py
index 2528d0a4..aa9d6c60 100644
--- a/jikimo_sale_multiple_supply_methods/models/mrp_bom.py
+++ b/jikimo_sale_multiple_supply_methods/models/mrp_bom.py
@@ -9,5 +9,6 @@ class MrpBom(models.Model):
 
         # 成品的供应商从模板中获取
         if product_type == 'product':
-            bom_id.subcontractor_id = product.product_tmpl_id.seller_ids.partner_id.id
+            if product.product_tmpl_id.seller_ids:
+                bom_id.subcontractor_id = product.product_tmpl_id.seller_ids[-1].partner_id.id
         return bom_id