diff --git a/sf_manufacturing/models/mrp_production.py b/sf_manufacturing/models/mrp_production.py
index c602fd8b..571971bc 100644
--- a/sf_manufacturing/models/mrp_production.py
+++ b/sf_manufacturing/models/mrp_production.py
@@ -806,6 +806,8 @@ class MrpProduction(models.Model):
                     'date_to': date_planned_end,
                 })
                 # work.write({'date_planned_start': date_planned_start, 'date_planned_finished': date_planned_end})
+                # 设置一个较大的结束时间，防止在设置开始时间时，结束时间小于开始时间
+                work.date_planned_finished = datetime.datetime.today() + datetime.timedelta(days=100)
                 work.date_planned_start = date_planned_start
                 work.date_planned_finished = date_planned_end
                 routing_workcenter = self.env['mrp.routing.workcenter'].sudo().search(