diff --git a/app/admin/controller/auth/Admin.php b/app/admin/controller/auth/Admin.php
index 8ab0762..c5ca548 100644
--- a/app/admin/controller/auth/Admin.php
+++ b/app/admin/controller/auth/Admin.php
@@ -21,7 +21,10 @@ class Admin extends Backend
 
     protected array|string $quickSearchField = ['username', 'nickname'];
 
-    protected string|int|bool $dataLimit = 'allAuthAndOthers';
+    /**
+     * 开启数据范围；具体范围见重写的 getDataLimitAdminIds（角色组树：仅本人 + 下级组内管理员）
+     */
+    protected bool|string|int $dataLimit = true;
 
     protected string $dataLimitField = 'id';
 
@@ -31,6 +34,17 @@ class Admin extends Backend
         return null;
     }
 
+    /**
+     * 非超管：仅可管理「本人 + 树形下级组内」的管理员账号；与角色组管理页的可见范围一致（列表不含仅同级的其他管理员）
+     */
+    protected function getDataLimitAdminIds(): array
+    {
+        if (!$this->dataLimit || !$this->auth || $this->auth->isSuperAdmin()) {
+            return [];
+        }
+        return $this->auth->getSelfAndSubordinateAdminIds();
+    }
+
     public function index(Request $request): Response
     {
         $response = $this->initializeBackend($request);
@@ -357,9 +371,12 @@ class Admin extends Backend
         if ($this->auth->isSuperAdmin()) {
             return null;
         }
-        $authGroups = $this->auth->getAllAuthGroups('allAuthAndOthers');
+        $allowedGroupIds = array_values(array_unique(array_merge(
+            Db::name('admin_group_access')->where('uid', $this->auth->id)->column('group_id'),
+            $this->auth->getAdminChildGroups()
+        )));
         foreach ($groups as $group) {
-            if (!in_array($group, $authGroups)) {
+            if (!in_array($group, $allowedGroupIds, false)) {
                 return $this->error(__('You have no permission to add an administrator to this group!'));
             }
         }
diff --git a/app/admin/controller/auth/AdminLog.php b/app/admin/controller/auth/AdminLog.php
index 1bee893..7d0e599 100644
--- a/app/admin/controller/auth/AdminLog.php
+++ b/app/admin/controller/auth/AdminLog.php
@@ -4,7 +4,6 @@ declare(strict_types=1);
 
 namespace app\admin\controller\auth;
 
-use Throwable;
 use app\common\controller\Backend;
 use app\admin\model\AdminLog as AdminLogModel;
 use support\Response;
@@ -36,7 +35,10 @@ class AdminLog extends Backend
 
         list($where, $alias, $limit, $order) = $this->queryBuilder();
         if (!$this->auth->isSuperAdmin()) {
-            $where[] = ['admin_id', '=', $this->auth->id];
+            $scopeIds = $this->auth->getSelfAndSubordinateAdminIds();
+            if ($scopeIds !== []) {
+                $where[] = ['admin_id', 'in', $scopeIds];
+            }
         }
         $res = $this->model
             ->withJoin($this->withJoinTable, $this->withJoinType)
diff --git a/app/admin/controller/auth/Group.php b/app/admin/controller/auth/Group.php
index 26cb0ec..dabe9f2 100644
--- a/app/admin/controller/auth/Group.php
+++ b/app/admin/controller/auth/Group.php
@@ -17,8 +17,6 @@ use Webman\Http\Request;
 
 class Group extends Backend
 {
-    protected string $authMethod = 'allAuthAndOthers';
-
     protected ?object $model = null;
 
     protected string|array $preExcludeFields = ['create_time', 'update_time'];
@@ -82,6 +80,9 @@ class Group extends Backend
             $rulesRes = $this->handleRules($data);
             if ($rulesRes instanceof Response) return $rulesRes;
 
+            $pidRes = $this->validateGroupParentId($data['pid'] ?? null);
+            if ($pidRes instanceof Response) return $pidRes;
+
             $result = false;
             $this->model->startTrans();
             try {
@@ -144,6 +145,11 @@ class Group extends Backend
             $rulesRes = $this->handleRules($data);
             if ($rulesRes instanceof Response) return $rulesRes;
 
+            if (array_key_exists('pid', $data)) {
+                $pidRes = $this->validateGroupParentId($data['pid'] ?? null);
+                if ($pidRes instanceof Response) return $pidRes;
+            }
+
             $result = false;
             $this->model->startTrans();
             try {
@@ -294,8 +300,6 @@ class Group extends Backend
         $pk      = $this->model->getPk();
         $initKey = $request->get('initKey') ?? $pk;
 
-        $absoluteAuth = $request->get('absoluteAuth') ?? false;
-
         if ($this->keyword) {
             $keyword = explode(' ', $this->keyword);
             foreach ($keyword as $item) {
@@ -308,11 +312,14 @@ class Group extends Backend
         }
 
         if (!$this->auth->isSuperAdmin()) {
-            $authGroups = $this->auth->getAllAuthGroups($this->authMethod, $where);
-            if (!$absoluteAuth) {
-                $authGroups = array_merge($this->adminGroups, $authGroups);
+            $descendantIds = $this->auth->getAdminChildGroups();
+            // 本人所在组 + 树形下级；不含同级、不含其它分支（与 getAllAuthGroups 的「权限多寡」脱钩）
+            $visibleIds = array_values(array_unique(array_merge($this->adminGroups, $descendantIds)));
+            if ($visibleIds === []) {
+                $where[] = ['id', '=', -1];
+            } else {
+                $where[] = ['id', 'in', $visibleIds];
             }
-            $where[] = ['id', 'in', $authGroups];
         }
         $data = $this->model->where($where)->select()->toArray();
 
@@ -337,9 +344,43 @@ class Group extends Backend
 
     private function checkAuth($groupId): ?Response
     {
-        $authGroups = $this->auth->getAllAuthGroups($this->authMethod, []);
-        if (!$this->auth->isSuperAdmin() && !in_array($groupId, $authGroups)) {
-            return $this->error(__($this->authMethod == 'allAuth' ? 'You need to have all permissions of this group to operate this group~' : 'You need to have all the permissions of the group and have additional permissions before you can operate the group~'));
+        if ($this->auth->isSuperAdmin()) {
+            return null;
+        }
+        $descendantIds = $this->auth->getAdminChildGroups();
+        if (!in_array($groupId, $descendantIds, false)) {
+            return $this->error(__('You can only operate subordinate role groups in the tree hierarchy~'));
+        }
+        return null;
+    }
+
+    /**
+     * 新增/编辑时校验父级：非超管只能挂在本人所在组或其树形下级之下，不可建顶级(pid=0)
+     */
+    private function validateGroupParentId(mixed $pid): ?Response
+    {
+        if ($this->auth->isSuperAdmin()) {
+            return null;
+        }
+        if ($pid === null || $pid === '' || $pid === false) {
+            return $this->error(__('Non super administrators cannot create top-level role groups'));
+        }
+        if ($pid === 0 || $pid === '0') {
+            return $this->error(__('Non super administrators cannot create top-level role groups'));
+        }
+        if (!is_numeric($pid)) {
+            return $this->error(__('The parent group is not within your manageable scope'));
+        }
+        $allowed = array_values(array_unique(array_merge($this->adminGroups, $this->auth->getAdminChildGroups())));
+        $ok = false;
+        foreach ($allowed as $aid) {
+            if ($aid == $pid) {
+                $ok = true;
+                break;
+            }
+        }
+        if (!$ok) {
+            return $this->error(__('The parent group is not within your manageable scope'));
         }
         return null;
     }
diff --git a/app/admin/lang/en/auth/group.php b/app/admin/lang/en/auth/group.php
index 1a80451..a05132b 100644
--- a/app/admin/lang/en/auth/group.php
+++ b/app/admin/lang/en/auth/group.php
@@ -9,5 +9,8 @@ return [
     'You need to have all the permissions of the group and have additional permissions before you can operate the group~' => 'You need to have all the permissions of the group and have additional permissions before you can operate the group~',
     'Role group has all your rights, please contact the upper administrator to add or do not need to add!'                => 'Role group has all your rights, please contact the upper administrator to add or do not need to add!',
     'The group permission node exceeds the range that can be allocated'                                                   => 'The group permission node exceeds the range that can be allocated, please refresh and try again~',
-    'Remark lang'                                                                                                         => 'For system security, the hierarchical relationship of role groups is for reference only. The actual hierarchy is determined by the number of permission nodes: same permissions = peer, containing and having additional permissions = superior. Peers cannot manage peers; superiors can assign their permission nodes to subordinates. For special cases where an admin needs to become a superior, create a virtual permission node.',
+    'You can only operate subordinate role groups in the tree hierarchy~'                                                 => 'You can only manage role groups that are strictly below yours in the role-group tree (not peers or other branches).',
+    'Non super administrators cannot create top-level role groups'                                                      => 'Non super administrators cannot create top-level role groups',
+    'The parent group is not within your manageable scope'                                                                => 'The selected parent group is outside your manageable scope',
+    'Remark lang'                                                                                                         => 'Role groups follow the tree (parent/child): you may only manage groups under your own membership branch; peers, other branches and ancestors cannot be managed here. When assigning rules you can still only select permission nodes you own.',
 ];
diff --git a/app/admin/lang/zh-cn/auth/group.php b/app/admin/lang/zh-cn/auth/group.php
index 1b5db16..f4a6a19 100644
--- a/app/admin/lang/zh-cn/auth/group.php
+++ b/app/admin/lang/zh-cn/auth/group.php
@@ -9,5 +9,8 @@ return [
     'You need to have all the permissions of the group and have additional permissions before you can operate the group~' => '您需要拥有该分组的所有权限且还有额外权限时，才可以操作该分组~',
     'Role group has all your rights, please contact the upper administrator to add or do not need to add!'                => '角色组拥有您的全部权限，请联系上级管理员添加或无需添加！',
     'The group permission node exceeds the range that can be allocated'                                                   => '分组权限节点超出可分配范围，请刷新重试~',
-    'Remark lang'                                                                                                         => '为保障系统安全，角色组本身的上下级关系仅供参考，系统的实际上下级划分是根据`权限多寡`来确定的，两位管理员的权限节点：相同被认为是`同级`、包含且有额外权限才被认为是`上级`，同级不可管理同级，上级可为下级分配自己拥有的权限节点；若有特殊情况管理员需转`上级`，可建立一个虚拟权限节点',
+    'You can only operate subordinate role groups in the tree hierarchy~'                                                 => '仅可管理在角色组树中属于您下级的角色组（不含同级、不含其他分支）~',
+    'Non super administrators cannot create top-level role groups'                                                      => '非超级管理员不能创建顶级角色组',
+    'The parent group is not within your manageable scope'                                                                => '所选父级角色组不在您可管理的范围内',
+    'Remark lang'                                                                                                         => '角色组以「树形父子关系」为准：仅可管理本人所在组之下的下级组；同级、其他分支及上级组不可在此管理。分配权限时仍只能勾选您自身拥有的权限节点。',
 ];
diff --git a/app/admin/library/Auth.php b/app/admin/library/Auth.php
index 97c8e07..db20ffa 100644
--- a/app/admin/library/Auth.php
+++ b/app/admin/library/Auth.php
@@ -297,6 +297,26 @@ class Auth extends \ba\Auth
         return array_unique($children);
     }
 
+    /**
+     * 本人 + 树形下级角色组内的管理员 ID（与管理员管理列表数据范围一致）
+     */
+    public function getSelfAndSubordinateAdminIds(): array
+    {
+        if ($this->isSuperAdmin()) {
+            return [];
+        }
+        $descendantGroupIds = $this->getAdminChildGroups();
+        $adminIds = [];
+        if ($descendantGroupIds !== []) {
+            $adminIds = Db::name('admin_group_access')
+                ->where('group_id', 'in', $descendantGroupIds)
+                ->column('uid');
+        }
+        $adminIds[] = $this->id;
+
+        return array_values(array_unique($adminIds));
+    }
+
     public function getGroupChildGroups(int $groupId, array &$children): void
     {
         $childrenTemp = AdminGroup::where('pid', $groupId)
diff --git a/web/src/lang/backend/en/auth/group.ts b/web/src/lang/backend/en/auth/group.ts
index 57f8a04..a03327c 100644
--- a/web/src/lang/backend/en/auth/group.ts
+++ b/web/src/lang/backend/en/auth/group.ts
@@ -5,5 +5,5 @@ export default {
     'Parent group': 'Superior group',
     'The parent group cannot be the group itself': 'The parent group cannot be the group itself',
     'Manage subordinate role groups here':
-        'In managing a subordinate role group (excluding a peer role group), you have all the rights of a subordinate role group and additional rights',
+        'You can only manage role groups under your branch in the tree; peers, other branches and ancestors are out of scope. You can still only assign permission nodes you own.',
 }
diff --git a/web/src/lang/backend/zh-cn/auth/group.ts b/web/src/lang/backend/zh-cn/auth/group.ts
index 18f6a82..28befd6 100644
--- a/web/src/lang/backend/zh-cn/auth/group.ts
+++ b/web/src/lang/backend/zh-cn/auth/group.ts
@@ -4,5 +4,6 @@ export default {
     jurisdiction: '权限',
     'Parent group': '上级分组',
     'The parent group cannot be the group itself': '上级分组不能是分组本身',
-    'Manage subordinate role groups here': '在此管理下级角色组（您拥有下级角色组的所有权限并且拥有额外的权限，不含同级）',
+    'Manage subordinate role groups here':
+        '在此仅可管理「角色组树」中您所在组之下的下级组；同级、其他分支与上级组不在管理范围内。分配权限时仍只能勾选您自身拥有的节点。',
 }