diff --git a/core/src/CurlHttpClient.cc b/core/src/CurlHttpClient.cc
index 847857dec2..0b1a0102ad 100644
--- a/core/src/CurlHttpClient.cc
+++ b/core/src/CurlHttpClient.cc
@@ -145,6 +145,7 @@ CurlHttpClient::makeRequest(const HttpRequest &request) {
       curl_easy_setopt(curlHandle_, CURLOPT_READFUNCTION, readCallback);
       curl_easy_setopt(curlHandle_, CURLOPT_UPLOAD, 1L);
       curl_easy_setopt(curlHandle_, CURLOPT_READDATA, ctx);
+      free(ctx);
     }
     break;
 
@@ -194,6 +195,7 @@ CurlHttpClient::makeRequest(const HttpRequest &request) {
   }
 
   CURLcode res = curl_easy_perform(curlHandle_);
+  curl_slist_free_all(list);
   switch (res) {
     case CURLE_OK: {
       long response_code;
@@ -221,7 +223,6 @@ CurlHttpClient::makeRequest(const HttpRequest &request) {
           HttpMethodToString(request.method()) + " " + request.url().toString()));
     }
   }
-  curl_slist_free_all(list);
 }
 
 }  // namespace AlibabaCloud