diff --git a/backend/app/service/FeishuNotificationService.php b/backend/app/service/FeishuNotificationService.php
index f235e04..81f3c8a 100644
--- a/backend/app/service/FeishuNotificationService.php
+++ b/backend/app/service/FeishuNotificationService.php
@@ -643,11 +643,10 @@ class FeishuNotificationService
 
             error_log('📤 发送文本消息: feishu_user_id=' . $feishuUserId . ', text=' . substr($text, 0, 100));
 
-            $response = \app\util\HttpClient::httpPost($apiUrl, $requestData, [
+            $responseData = \app\util\HttpClient::httpPost($apiUrl, $requestData, [
                 'Authorization: Bearer ' . $accessToken,
             ]);
 
-            $responseData = json_decode($response, true);
             $code = $responseData['code'] ?? -1;
 
             if ($code !== 0) {