diff --git a/spring-cloud-alicloud-oss/src/main/java/com/alibaba/alicloud/oss/OssAutoConfiguration.java b/spring-cloud-alicloud-oss/src/main/java/com/alibaba/alicloud/oss/OssAutoConfiguration.java
index d5e8052b..2392063b 100644
--- a/spring-cloud-alicloud-oss/src/main/java/com/alibaba/alicloud/oss/OssAutoConfiguration.java
+++ b/spring-cloud-alicloud-oss/src/main/java/com/alibaba/alicloud/oss/OssAutoConfiguration.java
@@ -50,8 +50,9 @@ public class OssAutoConfiguration {
 	@Bean(name = OSS_TASK_EXECUTOR_BEAN_NAME)
 	@ConditionalOnMissingBean
 	public ExecutorService ossTaskExecutor() {
-		return new ThreadPoolExecutor(8, 128,
-			60, TimeUnit.SECONDS, new SynchronousQueue<>());
+		int coreSize = Runtime.getRuntime().availableProcessors();
+		return new ThreadPoolExecutor(coreSize, 128, 60, TimeUnit.SECONDS,
+				new SynchronousQueue<>());
 	}
 
 }