diff --git a/app/src/config/keymap.ts b/app/src/config/keymap.ts
index 087f47b1e..3bc789369 100644
--- a/app/src/config/keymap.ts
+++ b/app/src/config/keymap.ts
@@ -268,7 +268,7 @@ export const keymap = {
                     }
 
                     if (["⌘", "⇧", "⌥", "⌃"].includes(keymapStr.substr(keymapStr.length - 1, 1)) ||
-                        ["⌘S", "⌘A", "⌘X", "⌘C", "⌘V", "⌘/", "⌘↑", "⌘↓", "⇧↑", "⇧↓", "⇧→", "⇧←", "⇧⇥", "⇧⌘⇥", "⌃⇥", "⌃⌘⇥", "⇧⌘→", "⇧⌘←", "⌘Home", "⌘End", "⇧↩", "↩", "PageUp", "PageDown", "⌫", "⌦", "F9"].includes(keymapStr)) {
+                        ["⌘S", "⌘A", "⌘X", "⌘C", "⌘V", "⌘/", "⌘↑", "⌘↓", "⇧↑", "⇧↓", "⇧→", "⇧←", "⇧⇥", "⇧⌘⇥", "⌃⇥", "⌃⌘⇥", "⇧⌘→", "⇧⌘←", "⌘Home", "⌘End", "⇧↩", "↩", "PageUp", "PageDown", "⌫", "⌦"].includes(keymapStr)) {
                         showMessage(tip + "] " + window.siyuan.languages.invalid);
                         return;
                     }
diff --git a/app/src/constants.ts b/app/src/constants.ts
index b00684ab2..18eda9625 100644
--- a/app/src/constants.ts
+++ b/app/src/constants.ts
@@ -83,9 +83,10 @@ export abstract class Constants {
     };
 
     // "⌘", "⇧", "⌥", "⌃"
-    // "⌘S", "⌘A", "⌘X", "⌘C", "⌘V", "⌘/", "⌘↑", "⌘↓", "⇧↑", "⇧↓", "⇧→", "⇧←", "⇧⇥", "⇧⌘⇥", "⌃⇥", "⌃⌘⇥", "⇧⌘→", "⇧⌘←", "⌘Home", "⌘End", "⇧↩", "↩", "PageUp", "PageDown", "⌫", "⌦", "F9" 不可自定义
+    // "⌘S", "⌘A", "⌘X", "⌘C", "⌘V", "⌘/", "⌘↑", "⌘↓", "⇧↑", "⇧↓", "⇧→", "⇧←", "⇧⇥", "⇧⌘⇥", "⌃⇥", "⌃⌘⇥", "⇧⌘→", "⇧⌘←", "⌘Home", "⌘End", "⇧↩", "↩", "PageUp", "PageDown", "⌫", "⌦" 不可自定义
     public static readonly SIYUAN_KEYMAP: IKeymap = {
         general: {
+            syncNow: {default: "F9", custom: "F9"},
             enterBack: {default: "⌥←", custom: "⌥←"},
             enter: {default: "⌥→", custom: "⌥→"},
             goForward: {default: "⌘]", custom: "⌘]"},
diff --git a/app/src/util/globalShortcut.ts b/app/src/util/globalShortcut.ts
index 5cc326200..eeead8d07 100644
--- a/app/src/util/globalShortcut.ts
+++ b/app/src/util/globalShortcut.ts
@@ -353,7 +353,7 @@ export const globalShortcut = () => {
             return;
         }
 
-        if (event.key === "F9") {
+        if (event.key === window.siyuan.config.keymap.general.syncNow.custom) {
             if (needSubscribe() || document.querySelector("#barSync svg").classList.contains("fn__rotate")) {
                 return;
             }
diff --git a/app/src/util/onGetConfig.ts b/app/src/util/onGetConfig.ts
index c422557e7..2de03761f 100644
--- a/app/src/util/onGetConfig.ts
+++ b/app/src/util/onGetConfig.ts
@@ -182,7 +182,7 @@ const initBar = () => {
         <use xlink:href="#iconSettings"></use>
     </svg>
 </div>
-<div id="barSync" class="toolbar__item b3-tooltips b3-tooltips__se" aria-label="${window.siyuan.config.sync.stat || (window.siyuan.languages.syncNow + " F9")}">
+<div id="barSync" class="toolbar__item b3-tooltips b3-tooltips__se" aria-label="${window.siyuan.config.sync.stat || (window.siyuan.languages.syncNow + " " + updateHotkeyTip(window.siyuan.config.keymap.general.syncNow.custom))}">
     <svg><use xlink:href="#iconRefresh"></use></svg>
 </div>
 <button id="barBack" data-menu="true" class="toolbar__item toolbar__item--disabled b3-tooltips b3-tooltips__se" aria-label="${window.siyuan.languages.goBack} ${updateHotkeyTip(window.siyuan.config.keymap.general.goBack.custom)}">