diff --git a/backend/app/util/HttpClient.php b/backend/app/util/HttpClient.php
index 97ed271..1454408 100644
--- a/backend/app/util/HttpClient.php
+++ b/backend/app/util/HttpClient.php
@@ -47,7 +47,7 @@ class HttpClient
         $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
         $error = curl_error($ch);
 
-        curl_close($ch);
+        // PHP 8.0+ curl 资源自动关闭，无需 curl_close()
 
         self::logRequest('GET', $url, [], $response, $httpCode);
 
@@ -103,7 +103,7 @@ class HttpClient
         $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
         $error = curl_error($ch);
 
-        curl_close($ch);
+        // PHP 8.0+ curl 资源自动关闭，无需 curl_close()
 
         self::logRequest('POST', $url, $data, $response, $httpCode);