diff --git a/content/self-host/install/_index.en.md b/content/self-host/install/_index.en.md
index 9a39d3e..1197f02 100644
--- a/content/self-host/install/_index.en.md
+++ b/content/self-host/install/_index.en.md
@@ -123,6 +123,8 @@ If you prohibit users without key from establishing non-encrypted connections, p
 ./hbbr -k _
 ````
 
+If you wanna change key, please remove `id_ed25519` and `id_ed25519.pub` files and restart hbbs/hbbr.
+
 {{% notice note %}}
 Key can also be seen on the [console](/docs/en/self-host/console/) welcome page (Click on Windows EXE).
 {{% /notice %}}
diff --git a/content/self-host/install/_index.zh-cn.md b/content/self-host/install/_index.zh-cn.md
index 17a612f..ff096d1 100644
--- a/content/self-host/install/_index.zh-cn.md
+++ b/content/self-host/install/_index.zh-cn.md
@@ -119,6 +119,8 @@ cat ./id_ed25519.pub
 ./hbbr -k _
 ```
 
+如果要更改key，请删除 `id_ed25519` 和 `id_ed25519.pub` 文件并重新启动 hbbs/hbbr。
+
 {{% notice note %}}
 在[控制台](/docs/zh-cn/self-host/console/)欢迎页面（点击Windows EXE）也可以看到Key。
 {{% /notice %}}
diff --git a/content/self-host/install/_index.zh-tw.md b/content/self-host/install/_index.zh-tw.md
index 15a371c..edaf9d3 100644
--- a/content/self-host/install/_index.zh-tw.md
+++ b/content/self-host/install/_index.zh-tw.md
@@ -119,6 +119,8 @@ cat ./id_ed25519.pub
 ./hbbr -k _
 ```
 
+如果要更改key，請刪除 `id_ed25519` 和 `id_ed25519.pub` 文件並重新啟動 hbbs/hbbr。
+
 {{% notice note %}}
 在[控制台](/docs/zh-tw/self-host/console/)歡迎頁面（點擊Windows EXE）也可以看到Key。
 {{% /notice %}}