diff --git a/static/js/chat.js b/static/js/chat.js
index 1ddd096..afd9d62 100644
--- a/static/js/chat.js
+++ b/static/js/chat.js
@@ -230,6 +230,7 @@ const I18N = {
         appTitle: "柏悦物流智能助手",
         customerLogin: "登录", customerLogout: "退出登录", customerCancel: "取消",
         customerUsername: "账号", customerPassword: "密码", customerQuery: "登录查询",
+        customerUsernamePlaceholder: "请输入账号", customerPasswordPlaceholder: "请输入密码",
         customerSigningIn: "登录中…", customerLoginFailed: "登录失败，请稍后重试。",
         customerLogoutFailed: "退出失败，请重试。",
         newChat: "新建对话",
@@ -340,6 +341,7 @@ const I18N = {
         appTitle: "Baiyue Logistics AI Assistant",
         customerLogin: "Sign in", customerLogout: "Sign out", customerCancel: "Cancel",
         customerUsername: "Username", customerPassword: "Password", customerQuery: "Sign in to view orders",
+        customerUsernamePlaceholder: "Enter username", customerPasswordPlaceholder: "Enter password",
         customerSigningIn: "Signing in…", customerLoginFailed: "Could not sign in. Please try again.",
         customerLogoutFailed: "Could not sign out. Please try again.",
         newChat: "New Chat",
diff --git a/static/js/customer.js b/static/js/customer.js
index e2108ba..1046a30 100644
--- a/static/js/customer.js
+++ b/static/js/customer.js
@@ -19,6 +19,8 @@ var CustomerLogin = {
             document.getElementById('customer-login-title').textContent=options.text('customerLogin');
             document.getElementById('customer-username-label').textContent=options.text('customerUsername');
             document.getElementById('customer-password-label').textContent=options.text('customerPassword');
+            username.placeholder=options.text('customerUsernamePlaceholder');
+            password.placeholder=options.text('customerPasswordPlaceholder');
         }
         function update(next){
             const previous=user;
diff --git a/templates/index.html b/templates/index.html
index ccfe250..b4e34d0 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -74,9 +74,9 @@
         <h2 id="customer-login-title">登录</h2>
         <form id="customer-login-form">
             <label for="customer-username" id="customer-username-label">账号</label>
-            <input id="customer-username" name="username" type="text" autocomplete="username" maxlength="80" required>
+            <input id="customer-username" name="username" type="text" autocomplete="username" placeholder="请输入账号" maxlength="80" required>
             <label for="customer-password" id="customer-password-label">密码</label>
-            <input id="customer-password" name="password" type="password" autocomplete="current-password" maxlength="256" required>
+            <input id="customer-password" name="password" type="password" autocomplete="current-password" placeholder="请输入密码" maxlength="256" required>
             <p id="customer-error" role="alert" hidden></p>
             <div class="customer-login-actions"><button type="button" id="customer-cancel">取消</button><button type="submit" id="customer-submit">登录</button></div>
         </form>