diff --git a/app/src/layout/util.ts b/app/src/layout/util.ts
index d23400299..3ab2f07a0 100644
--- a/app/src/layout/util.ts
+++ b/app/src/layout/util.ts
@@ -428,9 +428,9 @@ export const layoutToJSON = (layout: Layout | Wnd | Tab | Model, json: any) => {
 export const resizeDrag = () => {
     const dragElement = document.getElementById("drag");
     const width = dragElement.clientWidth;
-    const left = dragElement.getBoundingClientRect().left;
-    const windowWidth = document.querySelector("#windowControls").clientWidth;
-    const right = (windowWidth ? windowWidth : 5) + document.querySelector("#barSearch").clientWidth * 4;
+    const dragRect = dragElement.getBoundingClientRect()
+    const left = dragRect.left;
+    const right = window.innerWidth - dragRect.right;
     if (left > right && left - right < width) {
         dragElement.style.paddingRight = (left - right) + "px";
     } else if (left < right && right - left < width) {
diff --git a/app/src/util/onGetConfig.ts b/app/src/util/onGetConfig.ts
index a71eb5599..5460b51a2 100644
--- a/app/src/util/onGetConfig.ts
+++ b/app/src/util/onGetConfig.ts
@@ -191,6 +191,9 @@ const initBar = () => {
 <div id="barSetting" class="toolbar__item b3-tooltips b3-tooltips__sw${window.siyuan.config.readonly ? " fn__none" : ""}" aria-label="${window.siyuan.languages.config} ${updateHotkeyTip(window.siyuan.config.keymap.general.config.custom)}">
     <svg><use xlink:href="#iconSettings"></use></svg>
 </div>
+<div id="barHelp" class="toolbar__item b3-tooltips b3-tooltips__sw" aria-label="${window.siyuan.languages.openBy} ${window.siyuan.languages.help}">
+    <svg><use xlink:href="#iconHelp"></use></svg>
+</div>
 <div class="fn__flex" id="windowControls"></div>`;
     document.querySelector(".toolbar").addEventListener("click", (event: MouseEvent) => {
         let target = event.target as HTMLElement;
@@ -248,6 +251,10 @@ const initBar = () => {
                 openSetting();
                 event.stopPropagation();
                 break;
+            } else if (target.id === "barHelp") {
+                mountHelp();
+                event.stopPropagation();
+                break;
             } else if (target.id === "toolbarVIP") {
                 const dialogSetting = openSetting();
                 dialogSetting.element.querySelector('.b3-tab-bar [data-name="account"]').dispatchEvent(new CustomEvent("click"));