diff --git a/src/AuthorServerClient.php b/src/AuthorServerClient.php
index 53990d6..87f23fc 100644
--- a/src/AuthorServerClient.php
+++ b/src/AuthorServerClient.php
@@ -162,7 +162,7 @@ class AuthorServerClient
                 return new BizResponse();
             }
             $data = json_decode($content, true);
-            return new BizResponse($data['code'] ?? 0, $data['message'] ?? '', $data['data'] ?? []);
+            return new BizResponse($data['code'] ?? 0, $data['message'] ?? '', $data['data'] ?? [], $data['err'] ?? '');
 
         } catch (ClientException $e) {
             $body = $e->getResponse()->getBody()->getContents();
diff --git a/src/response/BizResponse.php b/src/response/BizResponse.php
index fa6449e..3bbcc90 100644
--- a/src/response/BizResponse.php
+++ b/src/response/BizResponse.php
@@ -6,19 +6,22 @@ class BizResponse
 {
     private int $code;
     private string $message;
-    private $data;
+    private mixed $data;
 
+    private string $errCode;
 
     /**
      * @param int $code
      * @param string $message
-     * @param $data
+     * @param array $data
+     * @param string $errCode
      */
-    public function __construct(int $code = -1, string $message = '', $data = [])
+    public function __construct(int $code = -1, string $message = '', mixed $data = [], string $errCode = '')
     {
         $this->code = $code;
         $this->message = $message;
         $this->data = $data;
+        $this->errCode = $errCode;
     }
 
     public function isSuccess(): bool
@@ -49,7 +52,7 @@ class BizResponse
     /**
      * @return mixed
      */
-    public function getData()
+    public function getData(): mixed
     {
         return $this->data;
     }
@@ -62,5 +65,15 @@ class BizResponse
         $this->data = $data;
     }
 
+    public function getErrCode(): string
+    {
+        return $this->errCode;
+    }
+
+    public function setErrCode(string $errCode): void
+    {
+        $this->errCode = $errCode;
+    }
+
 
 }
\ No newline at end of file