diff --git a/app/Http/Controllers/Mobile/UserController.php b/app/Http/Controllers/Mobile/UserController.php
index 75efdfb..9639ef5 100755
--- a/app/Http/Controllers/Mobile/UserController.php
+++ b/app/Http/Controllers/Mobile/UserController.php
@@ -178,7 +178,7 @@ class UserController extends CommonController
         if ($registeredName !== '') {
             unset($all['username'], $all['name']);
         }
-        if (request()->boolean('registration') || !empty($all['idcard'])) {
+        if (request()->boolean('registration') || array_key_exists('idcard', $all)) {
             $all['idcard'] = strtoupper(trim((string) ($all['idcard'] ?? '')));
             if (!preg_match('/^(\d{15}|\d{17}[\dX])$/D', $all['idcard'])) {
                 return $this->fail([ResponseCode::ERROR_PARAMETER, '请输入有效的身份证号']);