diff --git a/services/pln/implments/CustOrder.service.impl.go b/services/pln/implments/CustOrder.service.impl.go
index 5c611f0..e5b578f 100644
--- a/services/pln/implments/CustOrder.service.impl.go
+++ b/services/pln/implments/CustOrder.service.impl.go
@@ -649,7 +649,7 @@ func (impl *CustOrderServiceImplement) LockCustOrder(user *global.User, custOrde
 			return grmi.NewBusinessError("该客户订单的车型配置未关联座椅产品")
 		}
 		// 通过客户订单的时间间隔进行切割 分配给每一个序列工单
-		duration := orderData.PlanEndTime.Restore().Sub(time.Now())
+		duration := orderData.PlanEndTime.Restore().Sub(orderData.PlanStartTime.Restore())
 		totalQty := orderData.PlanQty * len(productLi)
 		orderData.OrderQty.SerialOrderQty = totalQty
 		orderData.OrderQty.ReleasedQty = orderData.OrderQty.PlanQty