diff --git a/src/components/chat/ChatInput.tsx b/src/components/chat/ChatInput.tsx
index cd56ac1..3cb307b 100644
--- a/src/components/chat/ChatInput.tsx
+++ b/src/components/chat/ChatInput.tsx
@@ -248,7 +248,7 @@ export function ChatInput(): React.JSX.Element {
           onPaste={handlePaste}
           placeholder="输入消息... (Enter 发送, Ctrl+Enter 换行, / 命令)" disabled={isStreaming}
           rows={1}
-          style={{ width: '100%', background: 'transparent', border: 'none', outline: 'none', color: 'inherit', fontSize: 13, lineHeight: '24px', resize: 'none', fontFamily: 'inherit', minHeight: 24, maxHeight: 144 }}
+          style={{ width: '100%', background: 'transparent', border: 'none', outline: 'none', color: 'inherit', fontSize: 14, lineHeight: '28px', resize: 'none', fontFamily: 'inherit', minHeight: 36, maxHeight: 160 }}
         />
 
         <Stack direction="row" justifyContent="space-between" alignItems="center" sx={{ mt: 1, minHeight: 32 }}>