diff --git a/Laravel/app/Lib/Tools.php b/Laravel/app/Lib/Tools.php
index 1efe01b..db078aa 100644
--- a/Laravel/app/Lib/Tools.php
+++ b/Laravel/app/Lib/Tools.php
@@ -5,6 +5,10 @@ use DateTime;
 class Tools{
     //根据当前日期和身份证获取年龄
     public static function calculateAgeFromID($idNumber, $targetDate) {
+        // 检查身份证号码是否有效
+        if (!preg_match("/^(\d{15}$|^\d{17}[xX\d]$)/", $idNumber)) {
+            return 0;
+        }
         // 提取出生年月日
         $birthYear = substr($idNumber, 6, 4);
         $birthMonth = substr($idNumber, 10, 2);