diff --git a/src/main/java/com/qcloud/cos/http/DefaultCosHttpClient.java b/src/main/java/com/qcloud/cos/http/DefaultCosHttpClient.java
index f48d8ad5..9c1fa704 100644
--- a/src/main/java/com/qcloud/cos/http/DefaultCosHttpClient.java
+++ b/src/main/java/com/qcloud/cos/http/DefaultCosHttpClient.java
@@ -48,6 +48,7 @@
 import com.qcloud.cos.retry.RetryPolicy;
 import com.qcloud.cos.utils.CodecUtils;
 import com.qcloud.cos.utils.ExceptionUtils;
+import com.qcloud.cos.utils.IOUtils;
 import com.qcloud.cos.utils.UrlEncoderUtils;
 import com.qcloud.cos.utils.ValidationUtils;
 
@@ -68,6 +69,7 @@
 import org.apache.http.client.methods.HttpRequestBase;
 import org.apache.http.client.protocol.HttpClientContext;
 import org.apache.http.entity.InputStreamEntity;
+import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClientBuilder;
 import org.apache.http.impl.client.HttpClients;
 import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
@@ -130,6 +132,7 @@ private void initHttpClient() {
     @Override
     public void shutdown() {
         this.idleConnectionMonitor.shutdown();
+        IOUtils.closeQuietly((CloseableHttpClient)this.httpClient, log);
     }
 
     // 因为Apache HTTP库自带的URL Encode对一些特殊字符如*等不进行转换, 和COS HTTP服务的URL Encode标准不一致