diff --git a/src/Exceptions/ApiInvalidParamException.php b/src/Exceptions/ApiInvalidParamException.php
index 63cc636..2e96820 100644
--- a/src/Exceptions/ApiInvalidParamException.php
+++ b/src/Exceptions/ApiInvalidParamException.php
@@ -2,8 +2,6 @@
 
 namespace PdToolKit\Exceptions;
 
-use Throwable;
-
 class ApiInvalidParamException extends ApiException
 {
     public function __construct($message, Throwable $previous = null)
diff --git a/src/Exceptions/ApiSystemException.php b/src/Exceptions/ApiSystemException.php
new file mode 100644
index 0000000..7e21c12
--- /dev/null
+++ b/src/Exceptions/ApiSystemException.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace PdToolKit\Exceptions;
+
+class ApiSystemException extends ApiException
+{
+    public function __construct($message = "网络波动，稍后再试", Throwable $previous = null)
+    {
+        parent::__construct($message, 400000, $previous);
+    }
+}
\ No newline at end of file