diff --git a/docs/guide/feature/safe/images/2fa.png b/docs/guide/feature/safe/images/2fa.png
new file mode 100644
index 00000000..87618615
Binary files /dev/null and b/docs/guide/feature/safe/images/2fa.png differ
diff --git a/docs/guide/feature/safe/index.md b/docs/guide/feature/safe/index.md
index f06dc18a..b578c95d 100644
--- a/docs/guide/feature/safe/index.md
+++ b/docs/guide/feature/safe/index.md
@@ -22,9 +22,11 @@ Certd 存储了证书以及授权等敏感数据，所以需要严格保障安
 * [站点隐藏设置说明](./hidden/)
   ![](./images/hidden.png)
 
-## 4、登录二次验证
+## 4、登录双重验证
 
-待实现
+支持2FA双重认证
+
+![](./images/2fa.png)
 
 ## 5、数据库自动备份【建议开启】
 * [自动备份设置说明](../../use/backup/)