diff --git a/electron-builder.yml b/electron-builder.yml
index ba64c53b..32a5439c 100644
--- a/electron-builder.yml
+++ b/electron-builder.yml
@@ -56,5 +56,6 @@ electronDownload:
 afterSign: scripts/notarize.js
 releaseInfo:
   releaseNotes: |
-    支持配置网络代理
-    支持隐藏左侧智能体
+    Windows 版本界面优化
+    新增 mermaid 图表支持
+    消息样式优化
diff --git a/src/renderer/src/assets/styles/markdown.scss b/src/renderer/src/assets/styles/markdown.scss
index dcea5969..206ddbed 100644
--- a/src/renderer/src/assets/styles/markdown.scss
+++ b/src/renderer/src/assets/styles/markdown.scss
@@ -5,6 +5,10 @@
   line-height: 1.6;
   user-select: text;
 
+  p:last-child {
+    margin-bottom: 5px;
+  }
+
   p:first-of-type {
     margin-top: 0;
   }
diff --git a/src/renderer/src/pages/home/components/Message.tsx b/src/renderer/src/pages/home/components/Message.tsx
index 027427f7..5494ac2a 100644
--- a/src/renderer/src/pages/home/components/Message.tsx
+++ b/src/renderer/src/pages/home/components/Message.tsx
@@ -32,6 +32,7 @@ const MessageItem: FC<Props> = ({ message, index, showMenu, onDeleteMessage }) =
   const { userName, showMessageDivider } = useSettings()
 
   const isLastMessage = index === 0
+  const isUserMessage = message.role === 'user'
   const canRegenerate = isLastMessage && message.role === 'assistant'
 
   const onCopy = () => {
@@ -112,7 +113,7 @@ const MessageItem: FC<Props> = ({ message, index, showMenu, onDeleteMessage }) =
           </Markdown>
         )}
         {showMenu && (
-          <MenusBar className={`menubar ${isLastMessage && 'show'} ${message.content.length < 300 && 'user'}`}>
+          <MenusBar className={`menubar ${isLastMessage && 'show'} ${isUserMessage && 'user'}`}>
             {message.role === 'user' && (
               <Tooltip title="Edit" mouseEnterDelay={0.8}>
                 <ActionButton>