diff --git a/backend/app/controller/AuthController.php b/backend/app/controller/AuthController.php
index c33330d..e79b9c9 100644
--- a/backend/app/controller/AuthController.php
+++ b/backend/app/controller/AuthController.php
@@ -131,7 +131,7 @@ class AuthController extends BaseController
             $token = JwtUtil::encode([
                 'user_id' => $user->id,
                 'company_id' => $user->company_id,
-                'feishu_user_id' => $user->feishu_user_id,
+                'feishu_app_id' => $user->feishu_app_id,
                 'union_id' => $user->union_id,
             ]);
 
diff --git a/backend/app/model/User.php b/backend/app/model/User.php
index 87fb166..f2c92a3 100644
--- a/backend/app/model/User.php
+++ b/backend/app/model/User.php
@@ -10,11 +10,6 @@ class User extends Model
 
     /**
      * 可填充字段
-     *
-     * 注意：以下字段已废弃，保留仅用于向后兼容
-     * @deprecated feishu_user_id - 请使用 UserFeishuApp 模型获取
-     * @deprecated feishu_open_id - 请使用 UserFeishuApp 模型获取
-     * @deprecated tenant_key - 请使用 UserFeishuApp 模型获取
      */
     protected $fillable = [
         'company_id',
@@ -28,13 +23,8 @@ class User extends Model
         'password',
         'status',
         'user_type',
-        'union_id',
-        // 废弃字段 - 请使用 UserFeishuApp 模型
-        'feishu_user_id',  // @deprecated
-        'feishu_open_id',  // @deprecated
-        'tenant_key',      // @deprecated
-        // 保留字段：记录最后登录的应用，用于快速获取默认应用
-        'feishu_app_id',
+        'union_id',         // 飞书 UnionID - 用于跨应用识别用户
+        'feishu_app_id',    // 最后登录的飞书应用ID - 用于快速获取默认应用
         'position',
         'sign_img',
     ];
@@ -149,21 +139,9 @@ class User extends Model
         return $query->where('company_id', $companyId);
     }
 
-    /**
-     * 根据飞书用户ID查找
-     * @deprecated 请通过 UserFeishuApp 模型查询
-     */
-    public function scopeByFeishuUserId($query, ?string $feishuUserId)
-    {
-        if ($feishuUserId === null) {
-            return $query;
-        }
-        return $query->where('feishu_user_id', $feishuUserId);
-    }
-
     /**
      * 根据飞书 UnionID 查找
-     * union_id 用于跨应用识别用户，保留此方法
+     * union_id 用于跨应用识别用户
      */
     public function scopeByFeishuUnionId($query, ?string $feishuUnionId)
     {
@@ -173,18 +151,6 @@ class User extends Model
         return $query->where('union_id', $feishuUnionId);
     }
 
-    /**
-     * 根据OpenID查找
-     * @deprecated 请通过 UserFeishuApp 模型查询
-     */
-    public function scopeByFeishuOpenId($query, ?string $openId)
-    {
-        if ($openId === null) {
-            return $query;
-        }
-        return $query->where('feishu_open_id', $openId);
-    }
-
     /**
      * 搜索用户
      */
diff --git a/backend/app/service/FeishuService.php b/backend/app/service/FeishuService.php
index c12358c..20cbd11 100644
--- a/backend/app/service/FeishuService.php
+++ b/backend/app/service/FeishuService.php
@@ -230,76 +230,4 @@ class FeishuService
             error_log("✨ 创建飞书绑定: user_id={$userId}, app_id={$appId}, feishu_user_id={$feishuUserId}");
         }
     }
-
-    /**
-     * 发送审批消息通知
-     * @deprecated 请使用 FeishuNotificationService::sendApprovalNotification() 代替
-     */
-    public function sendApprovalMessage(int $userId, string $title, string $url): bool
-    {
-        try {
-            $user = User::findOrFail($userId);
-            $company = Company::findOrFail($user->company_id);
-
-            $this->setCompany($company->id);
-            $token = $this->getAccessToken();
-
-            // 构建消息内容
-            $message = [
-                'msg_type' => 'interactive',
-                'card' => [
-                    'header' => [
-                        'title' => [
-                            'content' => '审批通知',
-                            'tag' => 'plain_text',
-                        ],
-                        'template' => 'blue',
-                    ],
-                    'elements' => [
-                        [
-                            'tag' => 'div',
-                            'text' => [
-                                'content' => $title,
-                                'tag' => 'plain_text',
-                            ],
-                        ],
-                        [
-                            'tag' => 'action',
-                            'actions' => [
-                                [
-                                    'tag' => 'button',
-                                    'text' => [
-                                        'content' => '查看详情',
-                                        'tag' => 'plain_text',
-                                    ],
-                                    'type' => 'default',
-                                    'url' => $url,
-                                ],
-                            ],
-                        ],
-                    ],
-                ],
-            ];
-
-            // 发送消息
-            $response = HttpClient::httpPost(
-                "https://open.feishu.cn/open-apis/message/v4/send_messages",
-                [
-                    'receive_id_type' => 'user_id',
-                    'receive_id' => $user->feishu_user_id,
-                    'msg_type' => 'interactive',
-                    'content' => json_encode(['card' => $message['card']]),
-                ],
-                [
-                    'Authorization: Bearer ' . $token,
-                ]
-            );
-
-            return ($response['code'] ?? -1) === 0;
-        } catch (Exception $e) {
-            // 记录错误但不中断流程
-            error_log('发送飞书消息失败: ' . $e->getMessage());
-            return false;
-        }
-    }
 }
diff --git a/backend/database/migrations/013_remove_users_feishu_fields.sql b/backend/database/migrations/013_remove_users_feishu_fields.sql
new file mode 100644
index 0000000..425ebdd
--- /dev/null
+++ b/backend/database/migrations/013_remove_users_feishu_fields.sql
@@ -0,0 +1,32 @@
+-- X-Server 删除 users 表中的冗余飞书字段
+-- 这些字段的数据已迁移至 user_feishu_apps 表
+
+USE xserver;
+
+-- =====================================
+-- 删除冗余的飞书字段
+-- =====================================
+
+-- 删除 feishu_user_id
+ALTER TABLE users DROP COLUMN feishu_user_id;
+
+-- 删除 feishu_open_id
+ALTER TABLE users DROP COLUMN feishu_open_id;
+
+-- 删除 tenant_key
+ALTER TABLE users DROP COLUMN tenant_key;
+
+-- =====================================
+-- 验证结果
+-- =====================================
+
+SELECT "=== users 表结构验证 ===" as "";
+DESCRIBE users;
+
+SELECT "=== user_feishu_apps 表统计 ===" as "";
+SELECT
+    company_id,
+    COUNT(DISTINCT user_id) as users_count,
+    COUNT(*) as bindings_count
+FROM user_feishu_apps
+GROUP BY company_id;