diff --git a/sf_manufacturing/models/mrp_workorder.py b/sf_manufacturing/models/mrp_workorder.py
index aa084eaf..6ef30a2c 100644
--- a/sf_manufacturing/models/mrp_workorder.py
+++ b/sf_manufacturing/models/mrp_workorder.py
@@ -827,8 +827,8 @@ class ResMrpWorkOrder(models.Model):
             else:
                 if self.date_planned_start > start_date:
                     vals['date_planned_start'] = start_date
-                if self.date_planned_finished and self.date_planned_finished < start_date:
-                    vals['date_planned_finished'] = start_date
+                # if self.date_planned_finished and self.date_planned_finished < start_date:
+                #     vals['date_planned_finished'] = start_date
                 return self.write(vals)
         else:
             raise UserError(_('请先完成上一步工单'))
@@ -875,7 +875,11 @@ class ResMrpWorkOrder(models.Model):
                         'state': 'draft',
                         'order_line': order_line_ids,
                     })
+            tem_date_planned_finished = record.date_planned_finished
             super().button_finish()
+            record.write({
+                'date_planned_finished': tem_date_planned_finished  # 保持原值
+            })
             is_production_id = True
             for workorder in record.production_id.workorder_ids:
                 if workorder.state != 'done':