diff --git a/app/Http/Controllers/Api/DialogController.php b/app/Http/Controllers/Api/DialogController.php
index 46b84cad8..b7aba7f99 100755
--- a/app/Http/Controllers/Api/DialogController.php
+++ b/app/Http/Controllers/Api/DialogController.php
@@ -2916,7 +2916,9 @@ class DialogController extends AbstractController
             $data['avatar'] = Base::fillUrl($array['avatar'] = $avatar);
         }
         $existName = Request::exists('chat_name') || Request::exists('name');
-        if ($existName && $dialog->group_type === 'user') {
+        // 个人群组群主可改名；全员群仅系统管理员可改名
+        $canEditName = $dialog->group_type === 'user' || ($dialog->group_type === 'all' && $admin === 1);
+        if ($existName && $canEditName) {
             $chatName = trim(Request::input('chat_name') ?: Request::input('name'));
             if (mb_strlen($chatName) < 2) {
                 return Base::retError('群名称至少2个字');
diff --git a/app/Models/WebSocketDialog.php b/app/Models/WebSocketDialog.php
index 34a73b6f7..d390692ea 100644
--- a/app/Models/WebSocketDialog.php
+++ b/app/Models/WebSocketDialog.php
@@ -62,6 +62,9 @@ class WebSocketDialog extends AbstractModel
 {
     use SoftDeletes;
 
+    // 全员群初始化默认名称（双语字面量），用于识别"管理员尚未自定义"的状态
+    const ALL_GROUP_DEFAULT_NAME = '全体成员 All members';
+
     protected $appends = ['deputy_ids'];
 
     /**
@@ -366,7 +369,9 @@ class WebSocketDialog extends AbstractModel
                         }
                         break;
                     case 'all':
-                        $data['name'] = Doo::translate('全体成员');
+                        $data['name'] = ($data['name'] && $data['name'] !== self::ALL_GROUP_DEFAULT_NAME)
+                            ? $data['name']
+                            : Doo::translate('全体成员');
                         $data['dialog_mute'] = Base::settingFind('system', 'all_group_mute');
                         break;
                 }
@@ -824,7 +829,9 @@ class WebSocketDialog extends AbstractModel
                         $name = \DB::table('project_tasks')->where('dialog_id', $this->id)->value('name');
                         break;
                     case 'all':
-                        $name = Doo::translate('全体成员');
+                        $name = ($name && $name !== self::ALL_GROUP_DEFAULT_NAME)
+                            ? $name
+                            : Doo::translate('全体成员');
                         break;
                 }
             }
diff --git a/database/seeders/WebSocketDialogsTableSeeder.php b/database/seeders/WebSocketDialogsTableSeeder.php
index 67592178e..6f1c6a268 100644
--- a/database/seeders/WebSocketDialogsTableSeeder.php
+++ b/database/seeders/WebSocketDialogsTableSeeder.php
@@ -218,6 +218,6 @@ class WebSocketDialogsTableSeeder extends Seeder
         User::botGetOrCreate('ai-claude');
 
         $userids = User::whereBot(0)->whereNull('disable_at')->pluck('userid')->toArray();
-        WebSocketDialog::createGroup("全体成员 All members", $userids, 'all');
+        WebSocketDialog::createGroup(WebSocketDialog::ALL_GROUP_DEFAULT_NAME, $userids, 'all');
     }
 }
diff --git a/resources/assets/js/pages/manage/components/DialogGroupInfo.vue b/resources/assets/js/pages/manage/components/DialogGroupInfo.vue
index a7515fb7f..db6d53680 100644
--- a/resources/assets/js/pages/manage/components/DialogGroupInfo.vue
+++ b/resources/assets/js/pages/manage/components/DialogGroupInfo.vue
@@ -6,7 +6,7 @@
                 <div class="quick-edit">
                     <div class="quick-text" :title="dialogData.name">{{dialogData.name}}</div>
                     <Icon
-                        v-if="isOwnerOrDeputy"
+                        v-if="isOwnerOrDeputy || (dialogData.group_type === 'all' && userIsAdmin)"
                         class="quick-icon"
                         type="ios-create-outline"
                         @click.stop="onEditName"/>
diff --git a/resources/assets/js/pages/manage/components/DialogWrapper.vue b/resources/assets/js/pages/manage/components/DialogWrapper.vue
index c432c0e5e..85c9b89ab 100644
--- a/resources/assets/js/pages/manage/components/DialogWrapper.vue
+++ b/resources/assets/js/pages/manage/components/DialogWrapper.vue
@@ -1028,6 +1028,10 @@ export default {
             if (this.modifyData.userid) {
                 return true
             }
+            if (this.dialogData.group_type === 'all') {
+                // 全员群仅系统管理员可改名
+                return this.userIsAdmin
+            }
             return this.dialogData.group_type === 'user'
         },
 
@@ -2873,6 +2877,10 @@ export default {
                         avatar: this.dialogData.avatar,
                         name: this.dialogData.name
                     }
+                    if (this.dialogData.group_type === 'all') {
+                        // 全员群走系统管理员权限校验
+                        this.modifyData.admin = 1
+                    }
                     if (this.dialogData.type === 'user') {
                         // 机器人
                         this.modifyData = Object.assign(this.modifyData, {