diff --git a/app/src/protyle/wysiwyg/input.ts b/app/src/protyle/wysiwyg/input.ts
index 913fa22eb..865c78520 100644
--- a/app/src/protyle/wysiwyg/input.ts
+++ b/app/src/protyle/wysiwyg/input.ts
@@ -145,7 +145,7 @@ export const input = async (protyle: IProtyle, blockElement: HTMLElement, range:
         if (blockElement.classList.contains("table")) {
             scrollLeft = getContenteditableElement(blockElement).scrollLeft;
         }
-        if (/<span data-type="backslash">.<\/span><wbr>/.test(html)) {
+        if (/<span data-type="backslash">.+<\/span><wbr>/.test(html)) {
             // 转义不需要添加 zwsp
             blockElement.outerHTML = html;
         } else {