diff --git a/packages/component/src/components/workspace/index.css.ts b/packages/component/src/components/workspace/index.css.ts
index 23193c6183..42d8d67783 100644
--- a/packages/component/src/components/workspace/index.css.ts
+++ b/packages/component/src/components/workspace/index.css.ts
@@ -23,7 +23,7 @@ export const appStyle = style({
     },
   },
   vars: {
-    '--affine-editor-width': '686px',
+    '--affine-editor-width': '800px',
   },
   '@media': {
     [breakpoints.down('sm', true)]: {