diff --git a/app/src/protyle/wysiwyg/index.ts b/app/src/protyle/wysiwyg/index.ts
index 0635c78d1..7dfdb1942 100644
--- a/app/src/protyle/wysiwyg/index.ts
+++ b/app/src/protyle/wysiwyg/index.ts
@@ -365,9 +365,9 @@ export class WYSIWYG {
             }
             const documentSelf = document;
             const rect = protyle.element.getBoundingClientRect();
-            const mostLeft = rect.left + parseInt(protyle.wysiwyg.element.style.paddingLeft) + 1;
+            const mostLeft = rect.left + (parseInt(protyle.wysiwyg.element.style.paddingLeft) || 24) + 1;
             // 不能用 firstElement，否则 https://ld246.com/article/1668758661338
-            const mostRight = mostLeft + (protyle.wysiwyg.element.clientWidth - parseInt(protyle.wysiwyg.element.style.paddingLeft) - parseInt(protyle.wysiwyg.element.style.paddingRight)) - 2;
+            const mostRight = mostLeft + (protyle.wysiwyg.element.clientWidth - (parseInt(protyle.wysiwyg.element.style.paddingLeft) || 24) - (parseInt(protyle.wysiwyg.element.style.paddingRight) || 16)) - 2;
             const mostBottom = rect.bottom;
             const y = event.clientY;