diff --git a/src/ZM/Exception/ZMKnownException.php b/src/ZM/Exception/ZMKnownException.php
index cd176782..28e0d310 100644
--- a/src/ZM/Exception/ZMKnownException.php
+++ b/src/ZM/Exception/ZMKnownException.php
@@ -4,10 +4,21 @@ declare(strict_types=1);
 
 namespace ZM\Exception;
 
+use JetBrains\PhpStorm\Deprecated;
+
+#[Deprecated(reason: '建议使用具体的异常类')]
 class ZMKnownException extends ZMException
 {
     public function __construct($err_code, $message = '', $code = 0, \Throwable $previous = null)
     {
         parent::__construct(zm_internal_errcode($err_code) . $message, $code, $previous);
+        if ($err_code === 'E99999') {
+            $code = 0;
+            // 这也太懒了吧
+        } else {
+            // 取最后两数
+            $code = (int)substr($err_code, -2);
+        }
+        parent::__construct($message, '', $code, $previous);
     }
 }