diff --git a/backend/package.json b/backend/package.json
index 109a6dd..c82e184 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.16.55",
+  "version": "2.16.56",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and Shadowrocket.",
   "main": "src/main.js",
   "scripts": {
diff --git a/backend/src/restful/miscs.js b/backend/src/restful/miscs.js
index ea650a5..7d521d9 100644
--- a/backend/src/restful/miscs.js
+++ b/backend/src/restful/miscs.js
@@ -109,6 +109,21 @@ async function gistBackupAction(action) {
     const updated = settings.syncTime;
     switch (action) {
         case 'upload':
+            try {
+                content = $.read('#sub-store');
+                if ($.env.isNode) content = JSON.stringify($.cache, null, `  `);
+                $.info(`下载备份, 与本地内容对比...`);
+                const onlineContent = await gist.download(
+                    GIST_BACKUP_FILE_NAME,
+                );
+                if (onlineContent === content) {
+                    $.info(`内容一致, 无需上传备份`);
+                    return;
+                }
+            } catch (error) {
+                $.error(`${error.message ?? error}`);
+            }
+
             // update syncTime
             settings.syncTime = new Date().getTime();
             $.write(settings, SETTINGS_KEY);
diff --git a/backend/src/utils/gist.js b/backend/src/utils/gist.js
index a6736d7..6949628 100644
--- a/backend/src/utils/gist.js
+++ b/backend/src/utils/gist.js
@@ -118,6 +118,7 @@ export default class Gist {
                 .get('/gists?per_page=100&page=1')
                 .then((response) => {
                     const gists = JSON.parse(response.body);
+                    $.info(`获取到当前 GitHub 用户的 gist: ${gists.length} 个`);
                     for (let g of gists) {
                         if (g.description === this.key) {
                             return g;