diff --git a/sf_sale/models/sale_order.py b/sf_sale/models/sale_order.py
index fb9d1d5b..ca851fc6 100644
--- a/sf_sale/models/sale_order.py
+++ b/sf_sale/models/sale_order.py
@@ -247,8 +247,8 @@ class RePurchaseOrder(models.Model):
                     raise UserError('请对【产品】中的【税】进行选择')
 
     def get_purchase_order(self, consecutive_process_parameters, production, product_id_to_production_names):
-        server_product_process = []
         for pp in consecutive_process_parameters:
+            server_product_process = []
             purchase_order = pp._get_surface_technics_purchase_ids()
             if purchase_order:
                 purchase_order.write({'state': 'draft'})