diff --git a/sf_manufacturing/models/stock.py b/sf_manufacturing/models/stock.py
index ae38b9c1..c9c97ec7 100644
--- a/sf_manufacturing/models/stock.py
+++ b/sf_manufacturing/models/stock.py
@@ -332,8 +332,8 @@ class StockRule(models.Model):
                         product_routing_workcenter = self.env[model].search(domain, order='sequence asc')
                         if production_item.production_type == '自动化产线加工':
                             for k in (production_item.product_id.model_processing_panel.split(',')):
-                                i += 1
                                 for route in product_routing_workcenter:
+                                    i += 1
                                     technology_design_values.append(
                                         self.env['sf.technology.design'].json_technology_design_str(k, route, i, False))
                         else: