diff --git a/.gitignore b/.gitignore
index b4aa267..3e45471 100644
--- a/.gitignore
+++ b/.gitignore
@@ -48,3 +48,7 @@ docker-volumes/
 # Lock files (optional - uncomment if you want to exclude)
 # package-lock.json
 # composer.lock
+
+# Large SQL files (import data files)
+*.sql
+!database/migrations/*.sql
diff --git a/GIT_WORKFLOW.md b/GIT_WORKFLOW.md
new file mode 100644
index 0000000..e36db9a
--- /dev/null
+++ b/GIT_WORKFLOW.md
@@ -0,0 +1,171 @@
+# Git 工作流
+
+## 分支策略
+
+采用 Git Flow 简化版工作流：
+
+### 主要分支
+
+| 分支 | 用途 | 说明 |
+|------|------|------|
+| `master` | 生产环境 | 保持稳定，只接受从 develop 合并的代码 |
+| `develop` | 开发环境 | 主开发分支，包含最新的开发功能 |
+| `feature/*` | 功能分支 | 从 develop 分支，开发完成后合并回 develop |
+| `hotfix/*` | 热修复分支 | 从 master 分支，修复后合并到 master 和 develop |
+
+## 分支命名规范
+
+### 功能分支
+```
+feature/功能名称
+例如：feature/i18n-support
+```
+
+### 热修复分支
+```
+hotfix/问题描述
+例如：hotfix/login-error
+```
+
+## 工作流程
+
+### 1. 开发新功能
+
+```bash
+# 从 develop 创建功能分支
+git checkout develop
+git pull origin develop
+git checkout -b feature/your-feature-name
+
+# 开发并提交
+git add .
+git commit -m "feat: add your feature"
+
+# 推送到远程
+git push -u origin feature/your-feature-name
+
+# 完成后合并到 develop
+git checkout develop
+git merge feature/your-feature-name
+git push origin develop
+
+# 删除功能分支（可选）
+git branch -d feature/your-feature-name
+```
+
+### 2. 修复紧急问题
+
+```bash
+# 从 master 创建热修复分支
+git checkout master
+git pull origin master
+git checkout -b hotfix/your-fix-name
+
+# 修复并提交
+git add .
+git commit -m "fix: describe the fix"
+
+# 推送到远程
+git push -u origin hotfix/your-fix-name
+
+# 合并到 master 和 develop
+git checkout master
+git merge hotfix/your-fix-name
+git push origin master
+
+git checkout develop
+git merge hotfix/your-fix-name
+git push origin develop
+```
+
+### 3. 发布到生产
+
+```bash
+# 将 develop 合并到 master
+git checkout master
+git merge develop
+git push origin master
+
+# 打标签
+git tag -a v1.0.0 -m "Release version 1.0.0"
+git push origin v1.0.0
+```
+
+## 提交信息规范
+
+使用 Conventional Commits 规范：
+
+| 类型 | 说明 | 示例 |
+|------|------|------|
+| `feat` | 新功能 | `feat: add user login` |
+| `fix` | 修复bug | `fix: correct i18n loading` |
+| `docs` | 文档变更 | `docs: update README` |
+| `style` | 代码格式 | `style: format code` |
+| `refactor` | 重构 | `refactor: simplify API` |
+| `test` | 测试 | `test: add unit tests` |
+| `chore` | 构建/工具 | `chore: update dependencies` |
+
+格式：
+```
+<type>(<scope>): <subject>
+
+<body>
+
+<footer>
+```
+
+## 当前分支状态
+
+| 分支 | 状态 | 说明 |
+|------|------|------|
+| `master` | ✅ 稳定 | 生产代码（含5语言支持） |
+| `develop` | ✅ 活跃 | 主开发分支（含5语言支持） |
+
+## 常用命令
+
+```bash
+# 查看所有分支
+git branch -a
+
+# 查看当前分支
+git branch --show-current
+
+# 切换分支
+git checkout <branch-name>
+
+# 创建并切换到新分支
+git checkout -b <new-branch>
+
+# 删除本地分支
+git branch -d <branch-name>
+
+# 删除远程分支
+git push origin --delete <branch-name>
+
+# 查看分支差异
+git diff develop
+
+# 查看分支树
+git log --graph --oneline --all
+```
+
+## 发布流程
+
+1. **开发阶段**：在 `develop` 分支进行开发
+2. **测试阶段**：创建 `release` 分支进行测试
+3. **发布阶段**：合并到 `master` 并打标签
+4. **维护阶段**：使用 `hotfix` 分支修复紧急问题
+
+## 注意事项
+
+1. **永远不要直接在 master 分支开发**
+2. **功能分支必须从 develop 分支创建**
+3. **提交前先拉取最新代码**
+4. **保持提交信息清晰规范**
+5. **及时删除已合并的功能分支**
+
+## 远程仓库
+
+- 仓库地址：http://219.157.255.213:25311/xinyouhe/x-server-mobile.git
+- 默认分支：develop（建议设置）
+- Pull Request：http://219.157.255.213:25311/xinyouhe/x-server-mobile/compare/master...develop
diff --git a/backend/app/Model/Company.php b/backend/app/Model/Company.php
index 704d6d7..ba7f04d 100644
--- a/backend/app/Model/Company.php
+++ b/backend/app/Model/Company.php
@@ -6,25 +6,32 @@ use support\Model;
 
 class Company extends Model
 {
-    protected $table = 'company';
+    protected $table = 'companies';
 
     protected $fillable = [
         'name',
-        'feishu_app_id',
-        'feishu_app_secret',
-        'feishu_tenant_key',
+        'abbr',
+        'tenant_key',
+        'sort',
         'status',
+        'feishu_enabled',
     ];
 
     protected $casts = [
+        'sort' => 'integer',
         'status' => 'integer',
+        'feishu_enabled' => 'boolean',
         'created_at' => 'datetime',
         'updated_at' => 'datetime',
     ];
 
-    protected $hidden = [
-        'feishu_app_secret',
-    ];
+    /**
+     * 关联用户
+     */
+    public function users()
+    {
+        return $this->hasMany(User::class, 'company_id');
+    }
 
     /**
      * 获取启用的公司
@@ -35,18 +42,52 @@ class Company extends Model
     }
 
     /**
-     * 根据飞书租户Key查找
+     * 根据租户Key查找
      */
-    public function scopeByFeishuTenantKey($query, string $tenantKey)
+    public function scopeByTenantKey($query, string $tenantKey)
     {
-        return $query->where('feishu_tenant_key', $tenantKey);
+        return $query->where('tenant_key', $tenantKey);
     }
 
     /**
-     * 根据飞书AppID查找
+     * 根据缩写查找
      */
-    public function scopeByFeishuAppId($query, string $appId)
+    public function scopeByAbbr($query, string $abbr)
     {
-        return $query->where('feishu_app_id', $appId);
+        return $query->where('abbr', $abbr);
+    }
+
+    /**
+     * 搜索公司
+     */
+    public function scopeSearch($query, ?string $keyword)
+    {
+        if (!$keyword) {
+            return $query;
+        }
+
+        return $query->where(function ($q) use ($keyword) {
+            $q->where('name', 'like', "%{$keyword}%")
+                ->orWhere('abbr', 'like', "%{$keyword}%");
+        });
+    }
+
+    /**
+     * 获取飞书应用配置
+     */
+    public function feishuApps()
+    {
+        return $this->hasMany(CompanyFeishuApp::class, 'company_id');
+    }
+
+    /**
+     * 获取默认飞书应用（X-Server）
+     */
+    public function getDefaultFeishuApp()
+    {
+        return $this->hasOne(CompanyFeishuApp::class, 'company_id')
+            ->where('system_id', 1)
+            ->where('status', 1)
+            ->orderBy('sort');
     }
 }
diff --git a/backend/app/Model/CompanyFeishuApp.php b/backend/app/Model/CompanyFeishuApp.php
new file mode 100644
index 0000000..2e758cc
--- /dev/null
+++ b/backend/app/Model/CompanyFeishuApp.php
@@ -0,0 +1,91 @@
+<?php
+
+namespace App\Model;
+
+use support\Model;
+
+class CompanyFeishuApp extends Model
+{
+    protected $table = 'company_feishu_apps';
+
+    protected $fillable = [
+        'company_id',
+        'system_id',
+        'name',
+        'tenant_key',
+        'app_id',
+        'app_secret',
+        'encrypt_key',
+        'verification_token',
+        'base_uri',
+        'callback_url',
+        'mobile_callback_url',
+        'scopes',
+        'state',
+        'sort',
+        'status',
+    ];
+
+    protected $casts = [
+        'company_id' => 'integer',
+        'system_id' => 'integer',
+        'sort' => 'integer',
+        'status' => 'integer',
+        'created_at' => 'datetime',
+        'updated_at' => 'datetime',
+    ];
+
+    protected $hidden = [
+        'app_secret',
+        'encrypt_key',
+        'verification_token',
+    ];
+
+    /**
+     * 关联公司
+     */
+    public function company()
+    {
+        return $this->belongsTo(Company::class, 'company_id');
+    }
+
+    /**
+     * 获取启用的应用
+     */
+    public function scopeActive($query)
+    {
+        return $query->where('status', 1);
+    }
+
+    /**
+     * 根据系统ID查找
+     */
+    public function scopeBySystemId($query, int $systemId)
+    {
+        return $query->where('system_id', $systemId);
+    }
+
+    /**
+     * 获取X-Server应用
+     */
+    public function scopeXServer($query)
+    {
+        return $query->where('system_id', 1);
+    }
+
+    /**
+     * 获取工单应用
+     */
+    public function scopeTicket($query)
+    {
+        return $query->where('system_id', 2);
+    }
+
+    /**
+     * 获取CRM应用
+     */
+    public function scopeCrm($query)
+    {
+        return $query->where('system_id', 3);
+    }
+}
diff --git a/backend/app/Model/User.php b/backend/app/Model/User.php
index 2547c4f..90747c7 100644
--- a/backend/app/Model/User.php
+++ b/backend/app/Model/User.php
@@ -6,26 +6,42 @@ use support\Model;
 
 class User extends Model
 {
-    protected $table = 'user';
+    protected $table = 'users';
 
     protected $fillable = [
         'company_id',
-        'feishu_user_id',
-        'feishu_union_id',
+        'sn',
+        'report_to',
         'name',
+        'avatar',
+        'sex',
         'email',
         'phone',
-        'avatar',
+        'password',
         'status',
+        'user_type',
+        'union_id',
+        'feishu_user_id',
+        'feishu_open_id',
+        'tenant_key',
+        'position',
+        'sign_img',
     ];
 
     protected $casts = [
         'company_id' => 'integer',
+        'report_to' => 'integer',
+        'sex' => 'integer',
         'status' => 'integer',
+        'user_type' => 'integer',
         'created_at' => 'datetime',
         'updated_at' => 'datetime',
     ];
 
+    protected $hidden = [
+        'password',
+    ];
+
     /**
      * 关联公司
      */
@@ -34,6 +50,22 @@ class User extends Model
         return $this->belongsTo(Company::class, 'company_id');
     }
 
+    /**
+     * 上级用户
+     */
+    public function parent()
+    {
+        return $this->belongsTo(User::class, 'report_to');
+    }
+
+    /**
+     * 下级用户
+     */
+    public function children()
+    {
+        return $this->hasMany(User::class, 'report_to');
+    }
+
     /**
      * 获取启用的用户
      */
@@ -42,19 +74,61 @@ class User extends Model
         return $query->where('status', 1);
     }
 
+    /**
+     * 根据公司ID查找
+     */
+    public function scopeByCompany($query, int $companyId)
+    {
+        return $query->where('company_id', $companyId);
+    }
+
     /**
      * 根据飞书用户ID查找
      */
-    public function scopeByFeishuUserId($query, string $feishuUserId)
+    public function scopeByFeishuUserId($query, ?string $feishuUserId)
     {
+        if ($feishuUserId === null) {
+            return $query;
+        }
         return $query->where('feishu_user_id', $feishuUserId);
     }
 
     /**
      * 根据飞书 UnionID 查找
      */
-    public function scopeByFeishuUnionId($query, string $feishuUnionId)
+    public function scopeByFeishuUnionId($query, ?string $feishuUnionId)
     {
-        return $query->where('feishu_union_id', $feishuUnionId);
+        if ($feishuUnionId === null) {
+            return $query;
+        }
+        return $query->where('union_id', $feishuUnionId);
+    }
+
+    /**
+     * 根据OpenID查找
+     */
+    public function scopeByFeishuOpenId($query, ?string $openId)
+    {
+        if ($openId === null) {
+            return $query;
+        }
+        return $query->where('feishu_open_id', $openId);
+    }
+
+    /**
+     * 搜索用户
+     */
+    public function scopeSearch($query, ?string $keyword)
+    {
+        if (!$keyword) {
+            return $query;
+        }
+
+        return $query->where(function ($q) use ($keyword) {
+            $q->where('name', 'like', "%{$keyword}%")
+                ->orWhere('email', 'like', "%{$keyword}%")
+                ->orWhere('phone', 'like', "%{$keyword}%")
+                ->orWhere('sn', 'like', "%{$keyword}%");
+        });
     }
 }
diff --git a/backend/app/Service/FeishuService.php b/backend/app/Service/FeishuService.php
index 57d2420..296d540 100644
--- a/backend/app/Service/FeishuService.php
+++ b/backend/app/Service/FeishuService.php
@@ -4,12 +4,14 @@ namespace App\Service;
 
 use App\Model\Company;
 use App\Model\User;
+use App\Util\Db;
 use support\Cache;
 
 class FeishuService
 {
     private ?string $accessToken = null;
     private ?int $companyId = null;
+    private ?int $appId = null;
 
     /**
      * 设置当前操作的公司
@@ -21,12 +23,72 @@ class FeishuService
         return $this;
     }
 
+    /**
+     * 设置飞书应用ID（支持多应用）
+     */
+    public function setApp(int $appId): self
+    {
+        $this->appId = $appId;
+        $this->accessToken = null;
+        return $this;
+    }
+
     /**
      * 根据 tenant_key 获取公司配置
      */
     public function getCompanyByTenantKey(string $tenantKey): ?Company
     {
-        return Company::active()->byFeishuTenantKey($tenantKey)->first();
+        return Company::active()->byTenantKey($tenantKey)->first();
+    }
+
+    /**
+     * 获取公司的飞书应用配置
+     */
+    private function getFeishuApp(int $appId): array
+    {
+        $sql = "SELECT * FROM company_feishu_apps WHERE id = ? AND status = 1";
+        $stmt = Db::connection()->getPdo()->prepare($sql);
+        $stmt->execute([$appId]);
+        $app = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        if (!$app) {
+            throw new \Exception('飞书应用配置不存在');
+        }
+
+        return $app;
+    }
+
+    /**
+     * 获取公司的默认飞书应用
+     */
+    private function getDefaultFeishuApp(int $companyId): array
+    {
+        $sql = "SELECT * FROM company_feishu_apps WHERE company_id = ? AND system_id = 1 AND status = 1 ORDER BY sort ASC LIMIT 1";
+        $stmt = Db::connection()->getPdo()->prepare($sql);
+        $stmt->execute([$companyId]);
+        $app = $stmt->fetch(PDO::FETCH_ASSOC);
+
+        if (!$app) {
+            throw new \Exception('未配置飞书应用');
+        }
+
+        return $app;
+    }
+
+    /**
+     * 获取飞书应用配置（优先使用指定应用，否则使用默认应用）
+     */
+    private function getAppConfig(): array
+    {
+        if (!$this->companyId) {
+            throw new \Exception('未设置公司ID');
+        }
+
+        if ($this->appId) {
+            return $this->getFeishuApp($this->appId);
+        }
+
+        return $this->getDefaultFeishuApp($this->companyId);
     }
 
     /**
@@ -38,14 +100,10 @@ class FeishuService
             return $this->accessToken;
         }
 
-        if (!$this->companyId) {
-            throw new \Exception('未设置公司ID');
-        }
-
-        $company = Company::findOrFail($this->companyId);
+        $app = $this->getAppConfig();
 
         // 从缓存获取
-        $cacheKey = "feishu:access_token:{$company->id}";
+        $cacheKey = "feishu:access_token:{$app['id']}";
         $token = Cache::get($cacheKey);
 
         if ($token) {
@@ -55,8 +113,8 @@ class FeishuService
 
         // 请求新的 token
         $response = $this->httpPost('https://open.feishu.cn/open-apis/auth/v3/tenant_access_token/internal', [
-            'app_id' => $company->feishu_app_id,
-            'app_secret' => $company->feishu_app_secret,
+            'app_id' => $app['app_id'],
+            'app_secret' => $app['app_secret'],
         ]);
 
         if ($response['code'] !== 0) {
@@ -78,17 +136,14 @@ class FeishuService
      */
     public function getUserInfo(string $authCode): array
     {
-        if (!$this->companyId) {
-            throw new \Exception('未设置公司ID');
-        }
-
+        $app = $this->getAppConfig();
         $token = $this->getAccessToken();
 
         // 获取用户 access_token
         $response = $this->httpPost('https://open.feishu.cn/open-apis/authen/v1/oidc/access_token', [
             'grant_type' => 'authorization_code',
-            'client_id' => Company::findOrFail($this->companyId)->feishu_app_id,
-            'client_secret' => Company::findOrFail($this->companyId)->feishu_app_secret,
+            'client_id' => $app['app_id'],
+            'client_secret' => $app['app_secret'],
             'code' => $authCode,
         ], [
             'Authorization: Bearer ' . $token,
diff --git a/backend/database/migrations/002_merge_old_data.sql b/backend/database/migrations/002_merge_old_data.sql
new file mode 100644
index 0000000..9989efe
--- /dev/null
+++ b/backend/database/migrations/002_merge_old_data.sql
@@ -0,0 +1,134 @@
+-- 合并旧项目数据到新项目
+-- 执行前请确保已备份数据库
+
+-- 1. 更新 companies 表，添加飞书相关字段
+ALTER TABLE `companies`
+ADD COLUMN `abbr` varchar(50) NOT NULL DEFAULT '' COMMENT '公司缩写' AFTER `name`,
+ADD COLUMN `tenant_key` varchar(36) NOT NULL DEFAULT '' COMMENT '飞书企业标识' AFTER `abbr`,
+ADD COLUMN `sort` int(11) NOT NULL DEFAULT 0 COMMENT '排序' AFTER `tenant_key`,
+ADD COLUMN `feishu_enabled` tinyint(1) NOT NULL DEFAULT 0 COMMENT '是否启用飞书';
+
+-- 2. 更新 users 表，添加飞书相关字段
+ALTER TABLE `users`
+ADD COLUMN `sn` varchar(36) NOT NULL DEFAULT '' COMMENT '用户编号' AFTER `id`,
+ADD COLUMN `report_to` bigint(20) UNSIGNED NULL DEFAULT 0 COMMENT '上级用户ID' AFTER `sn`,
+ADD COLUMN `avatar` varchar(255) NULL DEFAULT NULL COMMENT '头像' AFTER `phone`,
+ADD COLUMN `sex` tinyint(2) NULL DEFAULT NULL COMMENT '性别：1:男，2:女' AFTER `avatar`,
+ADD COLUMN `status` tinyint(1) NOT NULL DEFAULT 1 COMMENT '状态' AFTER `sex`,
+ADD COLUMN `user_type` tinyint(2) NOT NULL DEFAULT 1 COMMENT '用户类型 1内部2外部' AFTER `status`,
+ADD COLUMN `union_id` varchar(60) NULL DEFAULT NULL COMMENT 'ISV的唯一标识' AFTER `user_type`,
+ADD COLUMN `feishu_user_id` varchar(60) NULL DEFAULT NULL COMMENT '飞书user_id' AFTER `union_id`,
+ADD COLUMN `feishu_open_id` varchar(60) NULL DEFAULT NULL COMMENT '飞书open_id' AFTER `feishu_user_id`,
+ADD COLUMN `tenant_key` varchar(60) NULL DEFAULT NULL COMMENT '当前企业标识' AFTER `feishu_open_id`,
+ADD COLUMN `position` varchar(128) NULL DEFAULT NULL COMMENT '职位' AFTER `tenant_key`,
+ADD COLUMN `sign_img` varchar(255) NULL DEFAULT NULL COMMENT '签名图片' AFTER `position`;
+
+-- 3. 创建公司飞书应用配置表
+CREATE TABLE IF NOT EXISTS `company_feishu_apps` (
+  `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT 'ID',
+  `company_id` int(11) NOT NULL DEFAULT 0 COMMENT '公司ID',
+  `system_id` int(11) NOT NULL DEFAULT 0 COMMENT '系统ID：1=X-Server, 2=工单, 3=CRM_PC',
+  `name` varchar(90) NOT NULL DEFAULT '' COMMENT '应用名称',
+  `tenant_key` varchar(36) NOT NULL DEFAULT '' COMMENT '企业标识',
+  `app_id` varchar(60) NOT NULL DEFAULT '' COMMENT '飞书应用ID',
+  `app_secret` varchar(150) NOT NULL DEFAULT '' COMMENT '飞书应用密钥',
+  `encrypt_key` varchar(60) NULL DEFAULT NULL COMMENT '事件加密密钥',
+  `verification_token` varchar(60) NULL DEFAULT NULL COMMENT '事件验证令牌',
+  `base_uri` varchar(255) NOT NULL DEFAULT 'https://open.feishu.cn/open-apis/' COMMENT '飞书API基础地址',
+  `callback_url` varchar(255) NULL DEFAULT NULL COMMENT 'PC端回调地址',
+  `mobile_callback_url` varchar(255) NULL DEFAULT NULL COMMENT '移动端回调地址',
+  `scopes` text NULL COMMENT '授权范围',
+  `state` varchar(255) NULL DEFAULT NULL COMMENT '携带参数',
+  `sort` int(11) NOT NULL DEFAULT 0 COMMENT '排序',
+  `status` tinyint(1) NOT NULL DEFAULT 1 COMMENT '状态：1启用，0禁用',
+  `created_at` int(11) NOT NULL DEFAULT 0 COMMENT '创建时间',
+  `updated_at` int(11) NOT NULL DEFAULT 0 COMMENT '更新时间',
+  PRIMARY KEY (`id`) USING BTREE,
+  KEY `idx_company_id` (`company_id`) USING BTREE,
+  KEY `idx_system_id` (`system_id`) USING BTREE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='公司飞书应用配置';
+
+-- 4. 创建用户编号池表
+CREATE TABLE IF NOT EXISTS `user_sn_pool` (
+  `sn` int(11) UNSIGNED NOT NULL DEFAULT 0 COMMENT '用户编号',
+  `user_id` bigint(20) UNSIGNED NULL DEFAULT NULL COMMENT '分配的用户ID',
+  `status` tinyint(1) NOT NULL DEFAULT 0 COMMENT '状态：0未分配，1已分配',
+  `created_at` int(11) NOT NULL DEFAULT 0 COMMENT '创建时间',
+  PRIMARY KEY (`sn`) USING BTREE,
+  KEY `idx_user_id` (`user_id`) USING BTREE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='用户编号池';
+
+-- 5. 插入初始编号池数据（从100000到199999）
+INSERT IGNORE INTO `user_sn_pool` (`sn`, `status`, `created_at`)
+SELECT
+    100000 + n.n AS sn,
+    0 AS status,
+    UNIX_TIMESTAMP() AS created_at
+FROM (
+    SELECT 0 AS n UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION
+    SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9
+) t
+CROSS JOIN (
+    SELECT 0 AS n UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION
+    SELECT 5 UNION SELECT 6 UNION SELECT 7 UNION SELECT 8 UNION SELECT 9
+) t1
+CROSS JOIN (
+    SELECT 0 AS n UNION SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 4
+) t2;
+
+-- 6. 创建迁移数据临时表（用于从旧数据迁移）
+CREATE TABLE IF NOT EXISTS `_migration_users` (
+  `id` bigint(20) UNSIGNED NOT NULL,
+  `sn` varchar(36) NOT NULL DEFAULT '',
+  `report_to` bigint(20) UNSIGNED NULL DEFAULT 0,
+  `name` varchar(60) NOT NULL DEFAULT '',
+  `avatar` varchar(255) NULL DEFAULT NULL,
+  `sex` tinyint(2) NULL DEFAULT NULL,
+  `password` varchar(255) NOT NULL DEFAULT '',
+  `phone` varchar(22) NOT NULL DEFAULT '',
+  `email` varchar(90) NOT NULL DEFAULT '',
+  `corp_id` int(11) NOT NULL DEFAULT 0,
+  `status` tinyint(1) NOT NULL DEFAULT 1,
+  `user_type` tinyint(2) NOT NULL DEFAULT 1,
+  `union_id` varchar(60) NULL DEFAULT NULL,
+  `user_id` varchar(60) NULL DEFAULT NULL,
+  `open_id` varchar(60) NULL DEFAULT NULL,
+  `tenant_key` varchar(60) NULL DEFAULT NULL,
+  `position` varchar(128) NULL DEFAULT NULL,
+  `sign_img` varchar(255) NULL DEFAULT NULL,
+  `created_at` int(11) NOT NULL DEFAULT 0,
+  `updated_at` int(11) NOT NULL DEFAULT 0,
+  PRIMARY KEY (`id`) USING BTREE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS `_migration_corp` (
+  `id` int(11) UNSIGNED NOT NULL,
+  `name` varchar(255) NOT NULL DEFAULT '',
+  `abbr` enum('hesu','xinyouhe','paika','simate','mbaf') NOT NULL DEFAULT 'hesu',
+  `tenant_key` varchar(36) NOT NULL DEFAULT '',
+  `sort` int(11) NOT NULL DEFAULT 0,
+  `status` tinyint(1) NOT NULL DEFAULT 1,
+  `created_at` int(11) NOT NULL DEFAULT 0,
+  `updated_at` int(11) NOT NULL DEFAULT 0,
+  PRIMARY KEY (`id`) USING BTREE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+CREATE TABLE IF NOT EXISTS `_migration_corp_feishu_app` (
+  `id` int(11) UNSIGNED NOT NULL,
+  `corp_id` int(11) NOT NULL DEFAULT 0,
+  `system_id` int(11) NOT NULL DEFAULT 0,
+  `name` varchar(90) NOT NULL DEFAULT '',
+  `tenant_key` varchar(36) NOT NULL DEFAULT '',
+  `app_id` varchar(60) NOT NULL DEFAULT '',
+  `app_secret` varchar(150) NOT NULL DEFAULT '',
+  `base_uri` varchar(255) NOT NULL DEFAULT '',
+  `r_url` varchar(255) NULL DEFAULT NULL,
+  `m_url` varchar(255) NULL DEFAULT '',
+  `scopes` text NULL,
+  `state` varchar(255) NULL DEFAULT NULL,
+  `sort` int(11) NOT NULL DEFAULT 0,
+  `status` tinyint(1) NOT NULL DEFAULT 1,
+  `created_at` int(11) NOT NULL DEFAULT 0,
+  `updated_at` int(11) NOT NULL DEFAULT 0,
+  PRIMARY KEY (`id`) USING BTREE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
diff --git a/backend/scripts/import_old_data.php b/backend/scripts/import_old_data.php
new file mode 100644
index 0000000..4cd3b43
--- /dev/null
+++ b/backend/scripts/import_old_data.php
@@ -0,0 +1,270 @@
+<?php
+
+/**
+ * 数据迁移脚本
+ * 从旧项目导入用户、公司和飞书应用数据
+ *
+ * 使用方法：
+ * php scripts/import_old_data.php /path/to/fdesk.sql
+ */
+
+require_once __DIR__ . '/../vendor/autoload.php';
+require_once __DIR__ . '/../app/Util/Db.php';
+
+use App\Util\Db;
+
+class DataImporter
+{
+    private $pdo;
+    private $sourcePdo = null;
+
+    public function __construct()
+    {
+        // 初始化数据库连接
+        Db::init();
+        $this->pdo = Db::connection()->getPdo();
+    }
+
+    /**
+     * 从SQL文件导入数据
+     */
+    public function importFromSqlFile(string $sqlFile): void
+    {
+        echo "开始从 SQL 文件导入数据...\n";
+
+        // 创建临时数据库用于导入旧数据
+        $tempDbName = 'temp_fdesk_import';
+
+        try {
+            // 连接到MySQL服务器（不指定数据库）
+            $dsn = sprintf(
+                'mysql:host=%s;port=%s;charset=utf8mb4',
+                getenv('DB_HOST') ?: 'mysql',
+                getenv('DB_PORT') ?: '3306'
+            );
+            $rootPdo = new PDO($dsn, 'root', getenv('DB_PASSWORD') ?: '123456');
+            $rootPdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+
+            // 删除临时数据库（如果存在）
+            $rootPdo->exec("DROP DATABASE IF EXISTS `{$tempDbName}`");
+
+            // 创建临时数据库
+            $rootPdo->exec("CREATE DATABASE `{$tempDbName}` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci");
+            echo "✓ 临时数据库创建成功\n";
+
+            // 导入SQL文件到临时数据库
+            $sql = file_get_contents($sqlFile);
+            if ($sql === false) {
+                throw new Exception("无法读取 SQL 文件");
+            }
+
+            // 移除SQL文件中的创建数据库语句
+            $sql = preg_replace('/CREATE DATABASE.*?;/is', '', $sql);
+            $sql = preg_replace('/USE .*?;/is', "USE `{$tempDbName}`;", $sql);
+
+            $rootPdo->exec($sql);
+            echo "✓ SQL 文件导入临时数据库成功\n";
+
+            // 连接到临时数据库
+            $this->sourcePdo = new PDO(
+                $dsn . ';dbname=' . $tempDbName,
+                'root',
+                getenv('DB_PASSWORD') ?: '123456'
+            );
+            $this->sourcePdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+
+            // 开始迁移数据
+            $this->migrateData();
+
+            // 清理临时数据库
+            $rootPdo->exec("DROP DATABASE IF EXISTS `{$tempDbName}`");
+            echo "✓ 临时数据库已清理\n";
+
+            echo "\n数据迁移完成！\n";
+
+        } catch (Exception $e) {
+            echo "✗ 导入失败: " . $e->getMessage() . "\n";
+
+            // 清理临时数据库
+            if (isset($rootPdo)) {
+                $rootPdo->exec("DROP DATABASE IF EXISTS `{$tempDbName}`");
+            }
+
+            throw $e;
+        }
+    }
+
+    /**
+     * 迁移数据
+     */
+    private function migrateData(): void
+    {
+        $this->migrateCompanies();
+        $this->migrateFeishuApps();
+        $this->migrateUsers();
+    }
+
+    /**
+     * 迁移公司数据
+     */
+    private function migrateCompanies(): void
+    {
+        echo "\n迁移公司数据...\n";
+
+        $stmt = $this->sourcePdo->query("SELECT * FROM corp");
+        $companies = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+        foreach ($companies as $company) {
+            $sql = "INSERT INTO companies
+                (id, name, abbr, tenant_key, sort, status, created_at, updated_at, feishu_enabled)
+                VALUES (?, ?, ?, ?, ?, ?, ?, ?, 1)
+                ON DUPLICATE KEY UPDATE
+                name = VALUES(name),
+                abbr = VALUES(abbr),
+                tenant_key = VALUES(tenant_key)
+            ";
+
+            try {
+                $this->pdo->prepare($sql)->execute([
+                    $company['id'],
+                    $company['name'],
+                    $company['abbr'],
+                    $company['tenant_key'],
+                    $company['sort'],
+                    $company['status'],
+                    $company['created_at'],
+                    $company['updated_at'],
+                ]);
+                echo "  ✓ {$company['name']} (ID: {$company['id']})\n";
+            } catch (Exception $e) {
+                echo "  ✗ {$company['name']} 导入失败: " . $e->getMessage() . "\n";
+            }
+        }
+    }
+
+    /**
+     * 迁移飞书应用配置
+     */
+    private function migrateFeishuApps(): void
+    {
+        echo "\n迁移飞书应用配置...\n";
+
+        $stmt = $this->sourcePdo->query("SELECT * FROM corp_feishu_app");
+        $apps = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+        foreach ($apps as $app) {
+            $sql = "INSERT INTO company_feishu_apps
+                (id, company_id, system_id, name, tenant_key, app_id, app_secret,
+                 base_uri, callback_url, mobile_callback_url, scopes, state, sort, status, created_at, updated_at)
+                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+                ON DUPLICATE KEY UPDATE
+                app_id = VALUES(app_id),
+                app_secret = VALUES(app_secret)
+            ";
+
+            try {
+                $this->pdo->prepare($sql)->execute([
+                    $app['id'],
+                    $app['corp_id'],
+                    $app['system_id'],
+                    $app['name'],
+                    $app['tenant_key'],
+                    $app['app_id'],
+                    $app['app_secret'],
+                    $app['base_uri'],
+                    $app['r_url'],
+                    $app['m_url'],
+                    $app['scopes'],
+                    $app['state'],
+                    $app['sort'],
+                    $app['status'],
+                    $app['created_at'],
+                    $app['updated_at'],
+                ]);
+                echo "  ✓ {$app['name']} - 公司ID: {$app['corp_id']}\n";
+            } catch (Exception $e) {
+                echo "  ✗ {$app['name']} 导入失败: " . $e->getMessage() . "\n";
+            }
+        }
+    }
+
+    /**
+     * 迁移用户数据
+     */
+    private function migrateUsers(): void
+    {
+        echo "\n迁移用户数据...\n";
+
+        $stmt = $this->sourcePdo->query("SELECT * FROM `user` LIMIT 1000");
+        $users = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+        foreach ($users as $user) {
+            // 检查用户是否已存在
+            $checkSql = "SELECT id FROM users WHERE id = ?";
+            $checkStmt = $this->pdo->prepare($checkSql);
+            $checkStmt->execute([$user['id']]);
+
+            if ($checkStmt->fetch()) {
+                echo "  ⊘ {$user['name']} (ID: {$user['id']}) - 已存在，跳过\n";
+                continue;
+            }
+
+            $sql = "INSERT INTO users
+                (id, sn, report_to, name, avatar, sex, password, phone, email, company_id,
+                 status, user_type, union_id, feishu_user_id, feishu_open_id, tenant_key,
+                 position, sign_img, created_at, updated_at)
+                VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+            ";
+
+            try {
+                $this->pdo->prepare($sql)->execute([
+                    $user['id'],
+                    $user['sn'],
+                    $user['report_to'],
+                    $user['name'],
+                    $user['avatar'],
+                    $user['sex'],
+                    $user['password'],
+                    $user['phone'],
+                    $user['email'],
+                    $user['corp_id'],
+                    $user['status'],
+                    $user['user_type'],
+                    $user['union_id'],
+                    $user['user_id'],
+                    $user['open_id'],
+                    $user['tenant_key'],
+                    $user['position'],
+                    $user['sign_img'],
+                    $user['created_at'],
+                    $user['updated_at'],
+                ]);
+                echo "  ✓ {$user['name']} (ID: {$user['id']}, {$user['email']})\n";
+            } catch (Exception $e) {
+                echo "  ✗ {$user['name']} 导入失败: " . $e->getMessage() . "\n";
+            }
+        }
+    }
+}
+
+// 主执行
+if ($argc < 2) {
+    echo "用法: php " . basename(__FILE__) . " <fdesk.sql文件路径>\n";
+    echo "示例: php " . basename(__FILE__) . " /www/x-server-mobile/fdesk.sql\n";
+    exit(1);
+}
+
+$sqlFile = $argv[1];
+if (!file_exists($sqlFile)) {
+    echo "错误: SQL 文件不存在: {$sqlFile}\n";
+    exit(1);
+}
+
+try {
+    $importer = new DataImporter();
+    $importer->importFromSqlFile($sqlFile);
+} catch (Exception $e) {
+    echo "\n错误: " . $e->getMessage() . "\n";
+    echo "堆栈: " . $e->getTraceAsString() . "\n";
+    exit(1);
+}