diff --git a/sf_plan/models/custom_plan.py b/sf_plan/models/custom_plan.py
index c8539a40..492ef525 100644
--- a/sf_plan/models/custom_plan.py
+++ b/sf_plan/models/custom_plan.py
@@ -235,6 +235,8 @@ class sf_production_plan(models.Model):
                             workorder_list = record.production_id.workorder_ids.filtered(lambda x: x.processing_panel == item.processing_panel)
                             routing_workcenter = record.env['mrp.routing.workcenter'].sudo().search(
                                 [('name', '=', 'CNC加工')], limit=1)
+                            # 设置一个小的开始时间
+                            item.date_planned_start = datetime.now() - timedelta(days=100)
                             item.date_planned_finished = last_cnc_start + timedelta(
                                 minutes=routing_workcenter.time_cycle)
                             item.date_planned_start = last_cnc_start
@@ -314,6 +316,8 @@ class sf_production_plan(models.Model):
             current_workorder = workorder_list[i]
             next_workorder = workorder_list[i - 1]
             routing_workcenter = routing_workcenters.filtered(lambda x: x.name == next_workorder.name)[0]
+            # 设置一个小的开始时间
+            next_workorder.date_planned_start = datetime.now() - timedelta(days=100)
             next_workorder.date_planned_finished = current_workorder.date_planned_start
             next_workorder.date_planned_start = next_workorder.date_planned_finished - timedelta(
                 minutes=routing_workcenter.time_cycle)
@@ -327,6 +331,8 @@ class sf_production_plan(models.Model):
             current_workorder = workorder_list[i]   
             next_workorder = workorder_list[i + 1]
             routing_workcenter = routing_workcenters.filtered(lambda x: x.name == next_workorder.name)[0]
+            # 设置一个小的开始时间
+            next_workorder.date_planned_start = datetime.now() - timedelta(days=100)
             next_workorder.date_planned_finished = current_workorder.date_planned_finished + timedelta(
                 minutes=routing_workcenter.time_cycle)
             next_workorder.date_planned_start = current_workorder.date_planned_finished