diff --git a/app/src/config/editor.ts b/app/src/config/editor.ts
index edb74f9d2..e85cf37d0 100644
--- a/app/src/config/editor.ts
+++ b/app/src/config/editor.ts
@@ -197,9 +197,9 @@ export const editor = {
             item.editor.reload();
             setPadding(item.editor.protyle);
             if (window.siyuan.config.editor.fullWidth) {
-                item.editor.protyle.wysiwyg.element.setAttribute("data-fullwidth", "true");
+                item.editor.protyle.contentElement.setAttribute("data-fullwidth", "true");
             } else {
-                item.editor.protyle.wysiwyg.element.removeAttribute("data-fullwidth");
+                item.editor.protyle.contentElement.removeAttribute("data-fullwidth");
             }
         });
         setInlineStyle();
diff --git a/app/src/protyle/wysiwyg/index.ts b/app/src/protyle/wysiwyg/index.ts
index abea4b6f1..4bdf4ff50 100644
--- a/app/src/protyle/wysiwyg/index.ts
+++ b/app/src/protyle/wysiwyg/index.ts
@@ -78,9 +78,6 @@ export class WYSIWYG {
         if (window.siyuan.config.editor.displayBookmarkIcon) {
             this.element.classList.add("protyle-wysiwyg--attr");
         }
-        if (window.siyuan.config.editor.fullWidth) {
-            this.element.setAttribute("data-fullwidth", "true");
-        }
         this.bindEvent(protyle);
         keydown(protyle, this.element);
         dropEvent(protyle, this.element);
@@ -90,14 +87,14 @@ export class WYSIWYG {
         const ialKeys = Object.keys(ial);
         for (let i = 0; i < this.element.attributes.length; i++) {
             const oldKey = this.element.attributes[i].nodeName;
-            if (!["type", "class", "spellcheck", "contenteditable", "data-doc-type", "data-fullwidth", "style"].includes(oldKey) &&
+            if (!["type", "class", "spellcheck", "contenteditable", "data-doc-type", "style"].includes(oldKey) &&
                 !ialKeys.includes(oldKey)) {
                 this.element.removeAttribute(oldKey);
                 i--;
             }
         }
         ialKeys.forEach((key: string) => {
-            if (!["title-img", "title", "updated", "icon", "id", "type", "class", "spellcheck", "contenteditable", "data-doc-type", "data-fullwidth", "style"].includes(key)) {
+            if (!["title-img", "title", "updated", "icon", "id", "type", "class", "spellcheck", "contenteditable", "data-doc-type", "style"].includes(key)) {
                 this.element.setAttribute(key, ial[key]);
             }
         });