diff --git a/backend/package.json b/backend/package.json
index 3b49400..6baa53a 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.16.18",
+  "version": "2.16.19",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and ShadowRocket.",
   "main": "src/main.js",
   "scripts": {
diff --git a/backend/src/core/proxy-utils/parsers/index.js b/backend/src/core/proxy-utils/parsers/index.js
index 4602299..ac81a11 100644
--- a/backend/src/core/proxy-utils/parsers/index.js
+++ b/backend/src/core/proxy-utils/parsers/index.js
@@ -596,6 +596,9 @@ function URI_VLESS() {
                 // mKCP 的伪装头部类型。当前可选值有 none / srtp / utp / wechat-video / dtls / wireguard。省略时默认值为 none，即不使用伪装头部，但不可以为空字符串。
                 proxy.headerType = params.headerType || 'none';
             }
+            if (params.extra) {
+                proxy.extra = params.extra;
+            }
         }
 
         return proxy;
diff --git a/backend/src/core/proxy-utils/producers/uri.js b/backend/src/core/proxy-utils/producers/uri.js
index 564c1dc..428edb8 100644
--- a/backend/src/core/proxy-utils/producers/uri.js
+++ b/backend/src/core/proxy-utils/producers/uri.js
@@ -188,6 +188,10 @@ export default function URI_Producer() {
                 if (proxy.flow) {
                     flow = `&flow=${encodeURIComponent(proxy.flow)}`;
                 }
+                let extra = '';
+                if (proxy.extra) {
+                    extra = `&extra=${encodeURIComponent(proxy.extra)}`;
+                }
                 let vlessType = proxy.network;
                 if (
                     proxy.network === 'ws' &&
@@ -254,7 +258,7 @@ export default function URI_Producer() {
                     proxy.port
                 }?security=${encodeURIComponent(
                     security,
-                )}${vlessTransport}${alpn}${allowInsecure}${sni}${fp}${flow}${sid}${pbk}#${encodeURIComponent(
+                )}${vlessTransport}${alpn}${allowInsecure}${sni}${fp}${flow}${sid}${pbk}${extra}#${encodeURIComponent(
                     proxy.name,
                 )}`;
                 break;