diff --git a/frontend/mobile-app/lib/features/auth/presentation/pages/sms_verify_page.dart b/frontend/mobile-app/lib/features/auth/presentation/pages/sms_verify_page.dart
index 5250cef2..94e3d6bc 100644
--- a/frontend/mobile-app/lib/features/auth/presentation/pages/sms_verify_page.dart
+++ b/frontend/mobile-app/lib/features/auth/presentation/pages/sms_verify_page.dart
@@ -232,12 +232,13 @@ class _SmsVerifyPageState extends ConsumerState<SmsVerifyPage> {
   }
 
   void _onCodeChanged(int index, String value) {
-    // 清除错误信息
-    if (_errorMessage != null) {
-      setState(() {
+    // 每次输入都触发重建，以更新 showCursor 状态
+    setState(() {
+      // 清除错误信息
+      if (_errorMessage != null) {
         _errorMessage = null;
-      });
-    }
+      }
+    });
 
     if (value.isNotEmpty) {
       // 输入了字符，移动到下一个
@@ -377,7 +378,7 @@ class _SmsVerifyPageState extends ConsumerState<SmsVerifyPage> {
               keyboardType: TextInputType.number,
               textAlign: TextAlign.center,
               maxLength: 1,
-              showCursor: false,  // 隐藏光标，避免光标影响数字显示位置
+              showCursor: _controllers[index].text.isEmpty,  // 空时显示光标，有内容时隐藏避免遮挡数字
               inputFormatters: [
                 FilteringTextInputFormatter.digitsOnly,
               ],