diff --git a/app/admin/controller/Login.php b/app/admin/controller/Login.php
index 84e41eb..0571ed6 100644
--- a/app/admin/controller/Login.php
+++ b/app/admin/controller/Login.php
@@ -68,7 +68,7 @@ class Login extends AdminController
         $admin->save();
         $admin = $admin->toArray();
         unset($admin['password']);
-        $admin['expire_time'] = $post['keep_login'] == 1 ? 0 : time() + 7200;
+        $admin['expire_time'] = $post['keep_login'] == 1 ? 0 : time() + 86400;
         session('admin', $admin);
         $this->success('登录成功');
     }