diff --git a/library/src/main/java/com/qiniu/android/storage/NetReadyHandler.java b/library/src/main/java/com/qiniu/android/storage/NetReadyHandler.java
index f0b598fe..86033c6f 100644
--- a/library/src/main/java/com/qiniu/android/storage/NetReadyHandler.java
+++ b/library/src/main/java/com/qiniu/android/storage/NetReadyHandler.java
@@ -2,6 +2,8 @@
 
 /**
  * Created by bailong on 16/9/7.
+ *
+ * @hidden
  */
 public interface NetReadyHandler {
 
diff --git a/library/src/main/java/com/qiniu/android/storage/serverConfig/ServerConfigMonitor.java b/library/src/main/java/com/qiniu/android/storage/serverConfig/ServerConfigMonitor.java
index 31d43411..fe27da9f 100644
--- a/library/src/main/java/com/qiniu/android/storage/serverConfig/ServerConfigMonitor.java
+++ b/library/src/main/java/com/qiniu/android/storage/serverConfig/ServerConfigMonitor.java
@@ -9,7 +9,7 @@
 import java.util.Random;
 
 /**
- * server config monitor
+ * 服务控制监控
  */
 public class ServerConfigMonitor {
     private static final String TransactionKey = "ServerConfig";
diff --git a/library/src/main/java/com/qiniu/android/utils/Utils.java b/library/src/main/java/com/qiniu/android/utils/Utils.java
index 81e41b54..6995260a 100644
--- a/library/src/main/java/com/qiniu/android/utils/Utils.java
+++ b/library/src/main/java/com/qiniu/android/utils/Utils.java
@@ -67,6 +67,7 @@ public static String sdkLanguage() {
      * 获取 PID
      *
      * @return PID
+     * @hidden
      */
     public static Integer getCurrentProcessID() {
         return android.os.Process.myPid();
@@ -76,6 +77,7 @@ public static Integer getCurrentProcessID() {
      * 获取 TID
      *
      * @return TID
+     * @hidden
      */
     public static Long getCurrentThreadID() {
         Thread thread = Thread.currentThread();
@@ -86,6 +88,7 @@ public static Long getCurrentThreadID() {
      * 获取系统名
      *
      * @return 系统名
+     * @hidden
      */
     public static String systemName() {
         try {
@@ -119,6 +122,7 @@ private static String deviceName(String manufacturer, String model) {
      * 获取系统版本
      *
      * @return 系统版本
+     * @hidden
      */
     public static String systemVersion() {
         try {
@@ -136,6 +140,7 @@ public static String systemVersion() {
      * 获取信号强度
      *
      * @return 信号强度
+     * @hidden
      */
     @Deprecated
     public static Integer getCurrentSignalStrength() {
@@ -146,6 +151,7 @@ public static Integer getCurrentSignalStrength() {
      * 获取网络类型
      *
      * @return 网络类型
+     * @hidden
      */
     public static String getCurrentNetworkType() {
         Context context = ContextGetter.applicationContext();
@@ -160,6 +166,7 @@ public static String getCurrentNetworkType() {
      * 单位：毫秒
      *
      * @return 当前时间戳
+     * @hidden
      */
     public static long currentTimestamp() {
         return new Date().getTime();
@@ -170,6 +177,7 @@ public static long currentTimestamp() {
      * 单位：秒
      *
      * @return 当前时间戳
+     * @hidden
      */
     public static long currentSecondTimestamp() {
         return currentTimestamp() / 1000;
@@ -181,6 +189,7 @@ public static long currentSecondTimestamp() {
      * @param startDate 开始时间
      * @param endDate   结束时间
      * @return 时间间隔
+     * @hidden
      */
     public static long dateDuration(Date startDate, Date endDate) {
         if (startDate != null && endDate != null) {
@@ -196,6 +205,7 @@ public static long dateDuration(Date startDate, Date endDate) {
      * @param bytes     单位： B
      * @param totalTime 单位：ms
      * @return 速度
+     * @hidden
      */
     public static Long calculateSpeed(Long bytes, Long totalTime) {
         if (bytes == null || bytes < 0 || totalTime == null || totalTime == 0) {
@@ -223,6 +233,7 @@ public static String sdkDirectory() {
      *
      * @param string 字符串
      * @return Escape 后的字符串
+     * @hidden
      */
     public static String formEscape(String string) {
         if (string == null) {
@@ -240,6 +251,7 @@ public static String formEscape(String string) {
      * @param ip   ip
      * @param host host
      * @return ip 类型
+     * @hidden
      */
     @Deprecated
     public static String getIpType(String ip, String host) {
@@ -262,6 +274,7 @@ public static String getIpType(String ip, String host) {
      * @param ip          ip
      * @param host        host
      * @return ip 类型
+     * @hidden
      */
     public static String getIpType(String httpVersion, String ip, String host) {
         if (httpVersion == null) {
@@ -285,6 +298,7 @@ public static String getIpType(String httpVersion, String ip, String host) {
      *
      * @param ip ip
      * @return 是否为 IPv6
+     * @hidden
      */
     public static boolean isIpv6(String ip) {
         if (StringUtils.isNullOrEmpty(ip)) {