diff --git a/services/om/implments/SerialOrder.service.impl.go b/services/om/implments/SerialOrder.service.impl.go
index 0260d3c..85a3da0 100644
--- a/services/om/implments/SerialOrder.service.impl.go
+++ b/services/om/implments/SerialOrder.service.impl.go
@@ -401,7 +401,6 @@ func (impl *SerialOrderServiceImplement) InsertFromWorkOrder(user *models.Userta
 				log.Error("InsertFromWorkOrder SerialOrder InsertFromWorkOrder generate serial order id failed, error: " + err.Error())
 				return nil, err
 			}
-			planStartDate := workOrder.PlanStartDate.Restore().Format("20060102")
 			article, exist := artMap[workOrder.ArtId]
 			if !exist {
 				article, err = articleDao.SelectOne(workOrder.ArtId)
@@ -416,7 +415,7 @@ func (impl *SerialOrderServiceImplement) InsertFromWorkOrder(user *models.Userta
 					return nil, err
 				}
 			}
-			prefix := article.PartId + baseModel.PlantName + planStartDate
+			prefix := article.PartId + baseModel.PlantName + time.Now().Format("20060102")
 			serialOrderId := strings.Replace(serialNum, "SO-", prefix, 1)
 			var planEndTime time.Time
 			if perDuration != 0 {