diff --git a/app/src/constants.ts b/app/src/constants.ts
index 042e84e5d..c0ec946ca 100644
--- a/app/src/constants.ts
+++ b/app/src/constants.ts
@@ -105,6 +105,7 @@ export abstract class Constants {
     public static readonly LOCAL_FILEPOSITION = "local-fileposition";
     public static readonly LOCAL_DIALOGPOSITION = "local-dialogposition";
     public static readonly LOCAL_SESSION_FIRSTLOAD = "local-session-firstload";
+    public static readonly LOCAL_OUTLINE = "local-outline";
 
     // dialog
     public static readonly DIALOG_OPENCARD = "dialog-opencard";
diff --git a/app/src/layout/dock/Outline.ts b/app/src/layout/dock/Outline.ts
index 533ffac5a..6da086dac 100644
--- a/app/src/layout/dock/Outline.ts
+++ b/app/src/layout/dock/Outline.ts
@@ -6,7 +6,7 @@ import {getDockByType} from "../tabUtil";
 import {fetchPost} from "../../util/fetch";
 import {getAllModels} from "../getAll";
 import {hasClosestBlock, hasClosestByClassName, hasTopClosestByClassName} from "../../protyle/util/hasClosest";
-import {updateHotkeyTip} from "../../protyle/util/compatibility";
+import {setStorageVal, updateHotkeyTip} from "../../protyle/util/compatibility";
 import {openFileById} from "../../editor/util";
 import {Constants} from "../../constants";
 import {escapeHtml} from "../../util/escape";
@@ -87,7 +87,7 @@ export class Outline extends Model {
         <svg class="block__logoicon"><use xlink:href="#iconAlignCenter"></use></svg>${window.siyuan.languages.outline}
     </div>
     <span class="fn__flex-1 fn__space"></span>
-    <span data-type="expand" class="block__icon b3-tooltips b3-tooltips__sw" aria-label="${window.siyuan.languages.stickOpen} ${updateHotkeyTip(window.siyuan.config.keymap.editor.general.expand.custom)}">
+    <span data-type="expand" class="block__icon b3-tooltips b3-tooltips__sw${window.siyuan.storage[Constants.LOCAL_OUTLINE].keepExpand ? " block__icon--active" : ""}" aria-label="${window.siyuan.languages.stickOpen} ${updateHotkeyTip(window.siyuan.config.keymap.editor.general.expand.custom)}">
         <svg><use xlink:href="#iconExpand"></use></svg>
     </span>
     <span class="fn__space"></span>
@@ -155,9 +155,13 @@ export class Outline extends Model {
             }
             if (iconElement.classList.contains("block__icon--active")) {
                 iconElement.classList.remove("block__icon--active");
+                window.siyuan.storage[Constants.LOCAL_OUTLINE].keepExpand = false;
             } else {
                 iconElement.classList.add("block__icon--active");
+                window.siyuan.storage[Constants.LOCAL_OUTLINE].keepExpand = true;
             }
+
+            setStorageVal(Constants.LOCAL_OUTLINE, window.siyuan.storage[Constants.LOCAL_OUTLINE]);
             this.tree.expandAll();
         });
         options.tab.panelElement.addEventListener("click", (event: MouseEvent & { target: HTMLElement }) => {
diff --git a/app/src/protyle/util/compatibility.ts b/app/src/protyle/util/compatibility.ts
index 7aea95db6..81fc9ebbe 100644
--- a/app/src/protyle/util/compatibility.ts
+++ b/app/src/protyle/util/compatibility.ts
@@ -187,6 +187,7 @@ export const getLocalStorage = (cb: () => void) => {
         defaultStorage[Constants.LOCAL_LAYOUTS] = [];   // {name: "", layout:{}}
         defaultStorage[Constants.LOCAL_AI] = [];   // {name: "", memo: ""}
         defaultStorage[Constants.LOCAL_PLUGINTOPUNPIN] = [];
+        defaultStorage[Constants.LOCAL_OUTLINE] = {keepExpand: true};
         defaultStorage[Constants.LOCAL_FILEPOSITION] = {}; // {id: IScrollAttr}
         defaultStorage[Constants.LOCAL_DIALOGPOSITION] = {}; // {id: IPosition}
         defaultStorage[Constants.LOCAL_FLASHCARD] = {
@@ -250,7 +251,7 @@ export const getLocalStorage = (cb: () => void) => {
             Constants.LOCAL_EXPORTWORD, Constants.LOCAL_EXPORTPDF, Constants.LOCAL_DOCINFO, Constants.LOCAL_FONTSTYLES,
             Constants.LOCAL_SEARCHDATA, Constants.LOCAL_ZOOM, Constants.LOCAL_LAYOUTS, Constants.LOCAL_AI,
             Constants.LOCAL_PLUGINTOPUNPIN, Constants.LOCAL_SEARCHASSET, Constants.LOCAL_FLASHCARD, Constants.LOCAL_DIALOGPOSITION,
-            Constants.LOCAL_FILEPOSITION].forEach((key) => {
+            Constants.LOCAL_OUTLINE, Constants.LOCAL_FILEPOSITION].forEach((key) => {
             if (typeof response.data[key] === "string") {
                 try {
                     const parseData = JSON.parse(response.data[key]);