diff --git a/server/ldap-admin/internal/logic/getdepartmentslogic.go b/server/ldap-admin/internal/logic/getdepartmentslogic.go
index ce311be6..483e3ea3 100644
--- a/server/ldap-admin/internal/logic/getdepartmentslogic.go
+++ b/server/ldap-admin/internal/logic/getdepartmentslogic.go
@@ -35,6 +35,7 @@ func NewGetDepartmentsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *Ge
 type DNItem struct {
 	Attribute map[string]interface{} `json:"attribute"`
 	DN        string                 `json:"dn"`
+	ParentDN  string                 `json:"parent_dn"`
 	Sort      int                    `json:"sort"`
 	Child     []*DNItem              `json:"child"`
 }
@@ -72,6 +73,7 @@ func (l *GetDepartmentsLogic) GetDepartments(req *types.Request, userinfo *auth.
 		}
 		mapDN[v.DN] = &DNItem{
 			DN:        v.DN,
+			ParentDN:  "",
 			Attribute: attribute,
 			Sort:      sortNum,
 			Child:     make([]*DNItem, 0, 100),
@@ -90,8 +92,9 @@ func (l *GetDepartmentsLogic) GetDepartments(req *types.Request, userinfo *auth.
 			continue
 		}
 		//有父级
-		parentKey := strings.Join(sl[1:], ",")
-		if parent, ok := mapDN[parentKey]; ok {
+		parentDN := strings.Join(sl[1:], ",")
+		if parent, ok := mapDN[parentDN]; ok {
+			v.ParentDN = parentDN
 			parent.Child = append(parent.Child, v)
 			//排序
 			sort.Slice(parent.Child, func(i, j int) bool {