diff --git a/app/http/entities/backend/db.go b/app/http/entities/backend/db.go
index 50e8f74..6672401 100644
--- a/app/http/entities/backend/db.go
+++ b/app/http/entities/backend/db.go
@@ -34,7 +34,7 @@ type DbEditRequest struct {
 	DbName       string `json:"db_name" validate:"required" form:"db_name" example:""`
 	DbType       string `json:"db_type" validate:"required" form:"db_type" example:"mysql"`
 	DbPermission int    `json:"db_permission" validate:"required" form:"db_permission" example:"1"`
-	Source       string `json:"source" validate:"required" form:"source" example:""`
+	Source       string `json:"source"  form:"source" example:""`
 	Desc         string `json:"desc" form:"desc" example:""`
 	Status       int    `json:"status" form:"status" example:"1"`
 }
diff --git a/app/services/db_service/db_service.go b/app/services/db_service/db_service.go
index f820e51..9ee6d30 100644
--- a/app/services/db_service/db_service.go
+++ b/app/services/db_service/db_service.go
@@ -26,7 +26,7 @@ func DbList(request *backend.DbListRequest, page int, limit int) (count int64, D
 	if request.DbPermission != 0 {
 		session = session.And(builder.Eq{"DbPermission": request.DbPermission})
 	}
-	count, err = session.Omit("source", "UpdateTime").FindAndCount(&DbListInfo)
+	count, err = session.OrderBy("db_id desc").Omit("source", "UpdateTime").FindAndCount(&DbListInfo)
 	if err != nil {
 		return
 	}
@@ -42,8 +42,16 @@ func DbAdd(request *backend.DbAddRequest) (err error) {
 }
 
 func DbEdit(request *backend.DbEditRequest) (err error) {
+	var info crondbmodel.CronDb
+	flag, _ := crondbmodel.GetInstance().GetDb().ID(request.DbId).Get(&info)
+	if !flag {
+		return
+	}
 	var db crondbmodel.CronDb
 	_ = mapstructure.Decode(request, &db)
+	if request.Source == "" {
+		request.Source = info.Source
+	}
 	_, err = crondbmodel.GetInstance().GetDb().ID(request.DbId).Update(&db)
 	return
 }