diff --git a/sf_plan/models/custom_plan.py b/sf_plan/models/custom_plan.py
index 5f0d254b..a9f88c26 100644
--- a/sf_plan/models/custom_plan.py
+++ b/sf_plan/models/custom_plan.py
@@ -200,7 +200,7 @@ class sf_production_plan(models.Model):
                         if item.name == 'CNC加工':
                             item.date_planned_finished = datetime.now() + timedelta(days=100)
                             # item.date_planned_start = record.date_planned_start
-                            item.date_planned_start = datetime.now()
+                            item.date_planned_start = self.date_planned_start if self.date_planned_start else datetime.now()
                             record.sudo().production_id.plan_start_processing_time = item.date_planned_start
                             item.date_planned_finished = item.date_planned_start + timedelta(
                                 minutes=record.env['mrp.routing.workcenter'].sudo().search(