diff --git a/backend/package.json b/backend/package.json
index 4409a239e..08b829bbe 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.14.446",
+  "version": "2.14.447",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and ShadowRocket.",
   "main": "src/main.js",
   "scripts": {
diff --git a/backend/src/restful/download.js b/backend/src/restful/download.js
index 090789478..210311d82 100644
--- a/backend/src/restful/download.js
+++ b/backend/src/restful/download.js
@@ -213,9 +213,29 @@ async function downloadSubscription(req, res) {
                 }
             }
             if (sub.subUserinfo) {
+                let subUserInfo;
+                if (/^https?:\/\//.test(sub.subUserinfo)) {
+                    try {
+                        subUserInfo = await getFlowHeaders(
+                            undefined,
+                            undefined,
+                            undefined,
+                            proxy || sub.proxy,
+                            sub.subUserinfo,
+                        );
+                    } catch (e) {
+                        $.error(
+                            `订阅 ${name} 使用自定义流量链接 ${
+                                sub.subUserinfo
+                            } 获取流量信息时发生错误: ${JSON.stringify(e)}`,
+                        );
+                    }
+                } else {
+                    subUserInfo = sub.subUserinfo;
+                }
                 res.set(
                     'subscription-userinfo',
-                    [sub.subUserinfo, flowInfo].filter((i) => i).join('; '),
+                    [subUserInfo, flowInfo].filter((i) => i).join('; '),
                 );
             }
 
@@ -415,9 +435,29 @@ async function downloadCollection(req, res) {
                     }
                 }
                 if (sub.subUserinfo) {
+                    let subUserInfo;
+                    if (/^https?:\/\//.test(sub.subUserinfo)) {
+                        try {
+                            subUserInfo = await getFlowHeaders(
+                                undefined,
+                                undefined,
+                                undefined,
+                                proxy || sub.proxy,
+                                sub.subUserinfo,
+                            );
+                        } catch (e) {
+                            $.error(
+                                `组合订阅 ${name} 使用自定义流量链接 ${
+                                    sub.subUserinfo
+                                } 获取流量信息时发生错误: ${JSON.stringify(e)}`,
+                            );
+                        }
+                    } else {
+                        subUserInfo = sub.subUserinfo;
+                    }
                     res.set(
                         'subscription-userinfo',
-                        [sub.subUserinfo, flowInfo].filter((i) => i).join('; '),
+                        [subUserInfo, flowInfo].filter((i) => i).join('; '),
                     );
                 }
             }
diff --git a/backend/src/restful/subscriptions.js b/backend/src/restful/subscriptions.js
index 083ec9ed3..6ec5847fb 100644
--- a/backend/src/restful/subscriptions.js
+++ b/backend/src/restful/subscriptions.js
@@ -57,9 +57,29 @@ async function getFlowInfo(req, res) {
         !['localFirst', 'remoteFirst'].includes(sub.mergeSources)
     ) {
         if (sub.subUserinfo) {
+            let subUserInfo;
+            if (/^https?:\/\//.test(sub.subUserinfo)) {
+                try {
+                    subUserInfo = await getFlowHeaders(
+                        undefined,
+                        undefined,
+                        undefined,
+                        sub.proxy,
+                        sub.subUserinfo,
+                    );
+                } catch (e) {
+                    $.error(
+                        `订阅 ${name} 使用自定义流量链接 ${
+                            sub.subUserinfo
+                        } 获取流量信息时发生错误: ${JSON.stringify(e)}`,
+                    );
+                }
+            } else {
+                subUserInfo = sub.subUserinfo;
+            }
             try {
                 success(res, {
-                    ...parseFlowHeaders(sub.subUserinfo),
+                    ...parseFlowHeaders(subUserInfo),
                 });
             } catch (e) {
                 $.error(
@@ -149,9 +169,29 @@ async function getFlowInfo(req, res) {
                 startDate: $arguments.startDate,
                 cycleDays: $arguments.cycleDays,
             });
+            let subUserInfo;
+            if (/^https?:\/\//.test(sub.subUserinfo)) {
+                try {
+                    subUserInfo = await getFlowHeaders(
+                        undefined,
+                        undefined,
+                        undefined,
+                        sub.proxy,
+                        sub.subUserinfo,
+                    );
+                } catch (e) {
+                    $.error(
+                        `订阅 ${name} 使用自定义流量链接 ${
+                            sub.subUserinfo
+                        } 获取流量信息时发生错误: ${JSON.stringify(e)}`,
+                    );
+                }
+            } else {
+                subUserInfo = sub.subUserinfo;
+            }
             const result = {
                 ...parseFlowHeaders(
-                    [sub.subUserinfo, flowHeaders].filter((i) => i).join('; '),
+                    [subUserInfo, flowHeaders].filter((i) => i).join('; '),
                 ),
             };
             if (remainingDays != null) {
diff --git a/backend/src/utils/flow.js b/backend/src/utils/flow.js
index 176d56578..111118506 100644
--- a/backend/src/utils/flow.js
+++ b/backend/src/utils/flow.js
@@ -167,6 +167,9 @@ export async function getFlowHeaders(
                 flowInfo = getFlowField(headers);
             }
         }
+        if (flowInfo) {
+            flowInfo = flowInfo.trim();
+        }
         if (flowInfo) {
             headersResourceCache.set(id, flowInfo);
         }