diff --git a/server/app/adminapi/controller/DesktopController.php b/server/app/adminapi/controller/DesktopController.php
new file mode 100644
index 000000000..7f06d9d00
--- /dev/null
+++ b/server/app/adminapi/controller/DesktopController.php
@@ -0,0 +1,55 @@
+<?php
+// +----------------------------------------------------------------------
+// | 企业微信客服桌面端管理员认证接口
+// +----------------------------------------------------------------------
+
+namespace app\adminapi\controller;
+
+use app\common\enum\AdminTerminalEnum;
+use app\common\enum\YesNoEnum;
+use app\common\model\auth\Admin;
+
+/**
+ * 用最小身份信息把 ZYT 管理员账号映射到客服软件租户。
+ *
+ * session 标为免登录是为了跳过管理后台的菜单权限和登录 IP 限制；它并非匿名
+ * 接口，方法内部仍会严格校验 token 以及 token 的桌面终端类型。客服后台从另一
+ * 台服务器验证 token 时，请求 IP 本来就不会等于桌面用户登录时的 IP。
+ */
+class DesktopController extends BaseAdminController
+{
+    public array $notNeedLogin = ['session'];
+
+    public function session()
+    {
+        $identity = (array)($this->request->adminInfo ?? []);
+        if (empty($identity) || empty($identity['admin_id'])) {
+            return $this->fail('登录已失效，请重新登录');
+        }
+        if ((int)($identity['terminal'] ?? 0) !== AdminTerminalEnum::WECOM_RPA) {
+            return $this->fail('当前登录令牌不属于企业微信客服桌面端');
+        }
+
+        $admin = Admin::where(['id' => (int)$identity['admin_id']])
+            ->field('id,account,name,avatar,disable')
+            ->findOrEmpty();
+        if ($admin->isEmpty() || (int)$admin['disable'] === YesNoEnum::YES) {
+            return $this->fail('管理员不存在或已禁用');
+        }
+
+        $account = trim((string)$admin['account']);
+        $name = trim((string)$admin['name']);
+        return $this->data([
+            // 加类型前缀，避免管理员 id 与普通用户 id 相同时落到同一个客服租户。
+            'user_id' => 'admin:' . (int)$admin['id'],
+            'sn' => $account,
+            'nickname' => $name !== '' ? $name : $account,
+            'mobile' => '',
+            'avatar' => (string)$admin['avatar'],
+            'terminal' => AdminTerminalEnum::WECOM_RPA,
+            'expire_time' => (int)($identity['expire_time'] ?? 0),
+            'status' => 'active',
+            'account_type' => 'admin',
+        ]);
+    }
+}
diff --git a/server/app/adminapi/validate/LoginValidate.php b/server/app/adminapi/validate/LoginValidate.php
index 0cf405f77..a1d18d624 100755
--- a/server/app/adminapi/validate/LoginValidate.php
+++ b/server/app/adminapi/validate/LoginValidate.php
@@ -32,7 +32,8 @@ use think\facade\Log;
 class LoginValidate extends BaseValidate
 {
     protected $rule = [
-        'terminal' => 'require|in:' . AdminTerminalEnum::PC . ',' . AdminTerminalEnum::MOBILE,
+        'terminal' => 'require|in:' . AdminTerminalEnum::PC . ',' . AdminTerminalEnum::MOBILE
+            . ',' . AdminTerminalEnum::WECOM_RPA,
         'account' => 'require',
         'password' => 'require|password',
     ];
@@ -143,4 +144,4 @@ class LoginValidate extends BaseValidate
         return in_array($flag, ['1', 'true', 'yes', 'on'], true);
     }
 
-}
\ No newline at end of file
+}
diff --git a/server/app/common/enum/AdminTerminalEnum.php b/server/app/common/enum/AdminTerminalEnum.php
index e3dac5da5..63585a9dd 100755
--- a/server/app/common/enum/AdminTerminalEnum.php
+++ b/server/app/common/enum/AdminTerminalEnum.php
@@ -25,4 +25,6 @@ class AdminTerminalEnum
 {
     const PC = 1;
     const MOBILE = 2;
-}
\ No newline at end of file
+    // 企业微信客服桌面软件。与网页端分开保存会话，桌面登录不会顶掉浏览器登录。
+    const WECOM_RPA = 7;
+}
diff --git a/server/tests/AdminDesktopAuthContractTest.php b/server/tests/AdminDesktopAuthContractTest.php
new file mode 100644
index 000000000..3b16d8641
--- /dev/null
+++ b/server/tests/AdminDesktopAuthContractTest.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+require dirname(__DIR__) . '/vendor/autoload.php';
+
+use app\common\enum\AdminTerminalEnum;
+
+function adminDesktopExpect(bool $condition, string $message): void
+{
+    if (!$condition) {
+        fwrite(STDERR, "FAIL: {$message}\n");
+        exit(1);
+    }
+}
+
+adminDesktopExpect(AdminTerminalEnum::WECOM_RPA === 7, 'desktop admin terminal remains 7');
+
+$validator = file_get_contents(dirname(__DIR__) . '/app/adminapi/validate/LoginValidate.php');
+$controller = file_get_contents(dirname(__DIR__) . '/app/adminapi/controller/DesktopController.php');
+adminDesktopExpect(is_string($validator) && is_string($controller), 'desktop auth sources are readable');
+adminDesktopExpect(
+    str_contains($validator, 'AdminTerminalEnum::WECOM_RPA'),
+    'admin login accepts the dedicated desktop terminal'
+);
+adminDesktopExpect(
+    str_contains($controller, "public array \$notNeedLogin = ['session'];")
+        && str_contains($controller, "'user_id' => 'admin:'")
+        && str_contains($controller, "'account_type' => 'admin'"),
+    'desktop session verifies an admin token and namespaces its tenant identity'
+);
+
+echo "OK\n";