diff --git a/docs/en_US/v5/config/proxy/http.md b/docs/en_US/v5/config/proxy/http.md
index b1cdfa706..41771d3b5 100644
--- a/docs/en_US/v5/config/proxy/http.md
+++ b/docs/en_US/v5/config/proxy/http.md
@@ -12,6 +12,10 @@ Although HTTP inbound could be used to provide proxy service to remote users, it
 It is designed for providing proxy service to a local device or local network.
 :::
 
+:::warning
+If the incoming HTTP proxy connection's HTTP Header's User Agent exists and is empty, that header would be removed. This could allow remote end point discover you are using this program.
+:::
+
 ## HTTP Outbound
 * Name: `http`
 * Type: Outbound Protocol
diff --git a/docs/v5/config/proxy/http.md b/docs/v5/config/proxy/http.md
index 1a804061f..ebf69d0df 100644
--- a/docs/v5/config/proxy/http.md
+++ b/docs/v5/config/proxy/http.md
@@ -8,6 +8,10 @@ inbound.http
 虽然 HTTP 入站可以用于提供公共服务，但 HTTP 协议没有对传输加密，不适宜在公网中传输。HTTP 入站更有意义的用法是在局域网或本机环境下监听，为其他程序提供本地服务。
 :::
 
+:::warning
+HTTP 入站连接的 HTTP 头中 User Agent 存在且为空时，该 HTTP 头会被移除。这可能使您连接的目标服务器知晓您使用了本程序。
+:::
+
 ## HTTP 出站
 
 outbound.http