diff --git a/backend/package.json b/backend/package.json
index e3e06f8..d282207 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.14.388",
+  "version": "2.14.389",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and ShadowRocket.",
   "main": "src/main.js",
   "scripts": {
diff --git a/backend/src/core/proxy-utils/index.js b/backend/src/core/proxy-utils/index.js
index ce8155f..97405c5 100644
--- a/backend/src/core/proxy-utils/index.js
+++ b/backend/src/core/proxy-utils/index.js
@@ -292,6 +292,7 @@ export const ProxyUtils = {
     getISO,
     MMDB,
     Gist,
+    download,
 };
 
 function tryParse(parser, line) {
diff --git a/backend/src/utils/download.js b/backend/src/utils/download.js
index 95b1eb5..685d255 100644
--- a/backend/src/utils/download.js
+++ b/backend/src/utils/download.js
@@ -45,7 +45,10 @@ export default async function download(
     const { isNode, isStash, isLoon, isShadowRocket, isQX } = ENV();
     const { defaultProxy, defaultUserAgent, defaultTimeout, cacheThreshold } =
         $.read(SETTINGS_KEY);
-    const proxy = customProxy || defaultProxy;
+    let proxy = customProxy || defaultProxy;
+    if ($.env.isNode) {
+        proxy = proxy || eval('process.env.SUB_STORE_BACKEND_DEFAULT_PROXY');
+    }
     const userAgent = ua || defaultUserAgent || 'clash.meta';
     const requestTimeout = timeout || defaultTimeout;
     const id = hex_md5(userAgent + url);
diff --git a/backend/src/utils/flow.js b/backend/src/utils/flow.js
index 46c8f77..9e0296c 100644
--- a/backend/src/utils/flow.js
+++ b/backend/src/utils/flow.js
@@ -49,7 +49,11 @@ export async function getFlowHeaders(
     } else {
         const { defaultProxy, defaultFlowUserAgent, defaultTimeout } =
             $.read(SETTINGS_KEY);
-        const proxy = customProxy || defaultProxy;
+        let proxy = customProxy || defaultProxy;
+        if ($.env.isNode) {
+            proxy =
+                proxy || eval('process.env.SUB_STORE_BACKEND_DEFAULT_PROXY');
+        }
         const userAgent =
             ua ||
             defaultFlowUserAgent ||
diff --git a/backend/src/utils/gist.js b/backend/src/utils/gist.js
index 317603e..3157b62 100644
--- a/backend/src/utils/gist.js
+++ b/backend/src/utils/gist.js
@@ -9,8 +9,12 @@ import { SETTINGS_KEY } from '@/constants';
 export default class Gist {
     constructor({ token, key, syncPlatform }) {
         const { isStash, isLoon, isShadowRocket, isQX } = ENV();
-        const { defaultProxy: proxy, defaultTimeout: timeout } =
-            $.read(SETTINGS_KEY);
+        const { defaultProxy, defaultTimeout: timeout } = $.read(SETTINGS_KEY);
+        let proxy = defaultProxy;
+        if ($.env.isNode) {
+            proxy =
+                proxy || eval('process.env.SUB_STORE_BACKEND_DEFAULT_PROXY');
+        }
 
         if (syncPlatform === 'gitlab') {
             this.headers = {
diff --git a/scripts/demo.js b/scripts/demo.js
index 57e7dad..4326e54 100644
--- a/scripts/demo.js
+++ b/scripts/demo.js
@@ -66,6 +66,7 @@ function operator(proxies = [], targetPlatform, context) {
   //     removeFlag, // 移除 emoji 旗帜
   //     getISO, // 获取 ISO 3166-1 alpha-2 代码
   //     Gist, // Gist 类
+  //     download, // 内部的下载方法, 见 backend/src/utils/download.js
   // }
 
   // 如果只是为了快速修改或者筛选 可以参考 脚本操作支持节点快捷脚本 https://t.me/zhetengsha/970 和 脚本筛选支持节点快捷脚本 https://t.me/zhetengsha/1009