diff --git a/web/frontend/src/components/chat/user-message.tsx b/web/frontend/src/components/chat/user-message.tsx
index b47806f49..84978e907 100644
--- a/web/frontend/src/components/chat/user-message.tsx
+++ b/web/frontend/src/components/chat/user-message.tsx
@@ -5,7 +5,7 @@ interface UserMessageProps {
 export function UserMessage({ content }: UserMessageProps) {
   return (
     <div className="flex w-full flex-col items-end gap-1.5">
-      <div className="max-w-[70%] rounded-2xl rounded-tr-sm bg-violet-500 px-5 py-3 text-[15px] leading-relaxed text-white shadow-sm">
+      <div className="max-w-[70%] rounded-2xl rounded-tr-sm bg-violet-500 px-5 py-3 text-[15px] leading-relaxed text-white shadow-sm whitespace-pre-wrap">
         {content}
       </div>
     </div>
diff --git a/web/frontend/src/i18n/locales/en.json b/web/frontend/src/i18n/locales/en.json
index 7b3ad0911..ef5a7250e 100644
--- a/web/frontend/src/i18n/locales/en.json
+++ b/web/frontend/src/i18n/locales/en.json
@@ -17,7 +17,7 @@
   "chat": {
     "welcome": "How can I help you today?",
     "welcomeDesc": "Ask me about weather, settings, or any other tasks. I'm here to assist you.",
-    "placeholder": "Start a new message...",
+    "placeholder": "Start a new message...\nPress Enter to send, Shift + Enter for a new line",
     "newChat": "New Chat",
     "notConnected": "Gateway is not running. Start it to chat.",
     "thinking": {
diff --git a/web/frontend/src/i18n/locales/zh.json b/web/frontend/src/i18n/locales/zh.json
index d1ffa1ac9..68bb07cfd 100644
--- a/web/frontend/src/i18n/locales/zh.json
+++ b/web/frontend/src/i18n/locales/zh.json
@@ -17,7 +17,7 @@
   "chat": {
     "welcome": "今天我能为您做些什么？",
     "welcomeDesc": "您可以询问我天气、设置或其他任何任务，我随时为您效劳。",
-    "placeholder": "输入新消息...",
+    "placeholder": "输入新消息...\n按 Enter 发送，Shift + Enter 换行",
     "newChat": "新建对话",
     "notConnected": "服务未运行，请先启动以进行对话。",
     "thinking": {