diff --git a/web/src/components/MemoEditor/index.tsx b/web/src/components/MemoEditor/index.tsx
index 03c61738..22daa44e 100644
--- a/web/src/components/MemoEditor/index.tsx
+++ b/web/src/components/MemoEditor/index.tsx
@@ -349,6 +349,7 @@ const MemoEditor = (props: Props) => {
       toast.error(error.details);
     }
 
+    localStorage.removeItem(contentCacheKey);
     setState((state) => {
       return {
         ...state,
diff --git a/web/src/pages/MemoDetail.tsx b/web/src/pages/MemoDetail.tsx
index 5759f4c9..5c059b27 100644
--- a/web/src/pages/MemoDetail.tsx
+++ b/web/src/pages/MemoDetail.tsx
@@ -66,6 +66,7 @@ const MemoDetail = () => {
       placeholder: t("editor.add-your-comment-here"),
       parentMemoName: memo.name,
       onConfirm: handleCommentCreated,
+      cacheKey: `${memo.name}-${memo.updateTime}-comment`,
     });
   };