diff --git a/hutool-http/src/main/java/cn/hutool/http/HttpGlobalConfig.java b/hutool-http/src/main/java/cn/hutool/http/HttpGlobalConfig.java
index 5cff0e96d..119729cb4 100755
--- a/hutool-http/src/main/java/cn/hutool/http/HttpGlobalConfig.java
+++ b/hutool-http/src/main/java/cn/hutool/http/HttpGlobalConfig.java
@@ -20,6 +20,14 @@ import java.net.HttpURLConnection;
 public class HttpGlobalConfig implements Serializable {
 	private static final long serialVersionUID = 1L;
 
+	/**
+	 * -1: 含义，永不超时。
+	 * 如果：设置timeout = 3s(3000 ms), 那一次请求最大超时：就是：6s
+	 * 官方含义：timeout of zero is interpreted as an infinite timeout. （0的超时被解释为无限超时。）
+	 * 这里实际项目一定要进行修改，防止把系统拖死.
+	 * 底层调用：{@link HttpURLConnection#setReadTimeout(int)} 同时设置: 读取超时
+	 * 底层调用：{@link HttpURLConnection#setConnectTimeout(int)} 同时设置: 连接超时
+	 */
 	private static int timeout = -1;
 	private static boolean isAllowPatch = false;
 	private static String boundary = "--------------------Hutool_" + RandomUtil.randomString(16);