diff --git a/seahub/api2/endpoints/admin/dingtalk.py b/seahub/api2/endpoints/admin/dingtalk.py
index 2e3a58dd47..11a9c9502f 100644
--- a/seahub/api2/endpoints/admin/dingtalk.py
+++ b/seahub/api2/endpoints/admin/dingtalk.py
@@ -361,7 +361,6 @@ class AdminDingtalkDepartmentsImport(APIView):
                     group_id=group_id,
                     provider=DINGTALK_PROVIDER,
                     outer_id=department_obj_id,
-                    outer_parent_id=parent_department_id,
                 )
 
                 department_map_to_group_dict[department_obj_id] = group_id
diff --git a/seahub/api2/endpoints/admin/work_weixin.py b/seahub/api2/endpoints/admin/work_weixin.py
index cf600eb2dc..bcc51b0772 100644
--- a/seahub/api2/endpoints/admin/work_weixin.py
+++ b/seahub/api2/endpoints/admin/work_weixin.py
@@ -391,7 +391,6 @@ class AdminWorkWeixinDepartmentsImport(APIView):
                     group_id=group_id,
                     provider=WORK_WEIXIN_PROVIDER,
                     outer_id=department_obj_id,
-                    outer_parent_id=parent_department_id,
                 )
 
                 department_map_to_group_dict[department_obj_id] = group_id
diff --git a/seahub/auth/models.py b/seahub/auth/models.py
index 64b9aa5462..5fe2a87545 100644
--- a/seahub/auth/models.py
+++ b/seahub/auth/models.py
@@ -174,7 +174,6 @@ class ExternalDepartment(models.Model):
     group_id = models.IntegerField(unique=True)
     provider = models.CharField(max_length=32)
     outer_id = models.BigIntegerField()
-    outer_parent_id = models.BigIntegerField()
 
     objects = ExternalDepartmentManager()
 
diff --git a/seahub/dingtalk/management/commands/fix_dingtalk_departments_sync.py b/seahub/dingtalk/management/commands/fix_dingtalk_departments_sync.py
index 0ced359a7a..747c3d384d 100644
--- a/seahub/dingtalk/management/commands/fix_dingtalk_departments_sync.py
+++ b/seahub/dingtalk/management/commands/fix_dingtalk_departments_sync.py
@@ -98,7 +98,6 @@ class Command(BaseCommand):
             # check department argument
             group_name = department_obj.get('name')
             department_obj_id = department_obj.get('id')
-            parent_department_id = department_obj.get('parentid', 0)
             if department_obj_id is None or not group_name:
                 continue
 
@@ -116,7 +115,6 @@ class Command(BaseCommand):
                     group_id=group.id,
                     provider=DINGTALK_PROVIDER,
                     outer_id=department_obj_id,
-                    outer_parent_id=parent_department_id,
                 )
                 count += 1
 
diff --git a/seahub/work_weixin/management/commands/fix_work_weixin_departments_sync.py b/seahub/work_weixin/management/commands/fix_work_weixin_departments_sync.py
index 13a03b44c1..0d7c08763f 100644
--- a/seahub/work_weixin/management/commands/fix_work_weixin_departments_sync.py
+++ b/seahub/work_weixin/management/commands/fix_work_weixin_departments_sync.py
@@ -97,7 +97,6 @@ class Command(BaseCommand):
             # check department argument
             group_name = department_obj.get('name')
             department_obj_id = department_obj.get('id')
-            parent_department_id = department_obj.get('parentid', 0)
             if department_obj_id is None or not group_name:
                 continue
 
@@ -115,7 +114,6 @@ class Command(BaseCommand):
                     group_id=group.id,
                     provider=WORK_WEIXIN_PROVIDER,
                     outer_id=department_obj_id,
-                    outer_parent_id=parent_department_id,
                 )
                 count += 1
 
diff --git a/sql/mysql.sql b/sql/mysql.sql
index df64457ae2..cde8a349b8 100644
--- a/sql/mysql.sql
+++ b/sql/mysql.sql
@@ -1288,7 +1288,6 @@ CREATE TABLE `external_department` (
     `group_id` int(11) NOT NULL,
     `provider` varchar(32) NOT NULL,
     `outer_id` bigint(20) NOT NULL,
-    `outer_parent_id` bigint(20) NOT NULL,
     PRIMARY KEY (`id`),
     UNIQUE KEY `group_id` (`group_id`),
     UNIQUE KEY `external_department_provider_outer_id_8dns6vkw_uniq` (`provider`,`outer_id`)
diff --git a/sql/sqlite3.sql b/sql/sqlite3.sql
index c7aabc8a77..5bd25b1add 100644
--- a/sql/sqlite3.sql
+++ b/sql/sqlite3.sql
@@ -600,6 +600,6 @@ CREATE INDEX "ocm_share_received_from_server_url_10527b80" ON "ocm_share_receive
 CREATE INDEX "ocm_share_received_repo_id_9e77a1b9" ON "ocm_share_received" ("repo_id");
 CREATE INDEX "ocm_share_received_provider_id_60c873e0" ON "ocm_share_received" ("provider_id");
 CREATE TABLE "repo_auto_delete" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "repo_id" varchar(36) NOT NULL UNIQUE, "days" integer NOT NULL);
-CREATE TABLE "external_department" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "group_id" integer NOT NULL UNIQUE, "provider" varchar(32) NOT NULL, "outer_id" bigint NOT NULL, "outer_parent_id" bigint NOT NULL);
+CREATE TABLE "external_department" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "group_id" integer NOT NULL UNIQUE, "provider" varchar(32) NOT NULL, "outer_id" bigint NOT NULL);
 CREATE UNIQUE INDEX "external_department_provider_outer_id_8dns6vkw_uniq" ON "external_department" (`provider`,`outer_id`);
 COMMIT;