diff --git a/Aria/src/main/java/com/arialyy/aria/core/download/FtpDirDownloadTarget.java b/Aria/src/main/java/com/arialyy/aria/core/download/FtpDirDownloadTarget.java
index d18b90dd..4d0f2a5c 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/download/FtpDirDownloadTarget.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/download/FtpDirDownloadTarget.java
@@ -79,6 +79,16 @@ public class FtpDirDownloadTarget extends BaseGroupTarget<FtpDirDownloadTarget>
         }
       }
     }
+    if (mTaskEntity.getUrlEntity().isFtps) {
+      if (TextUtils.isEmpty(mTaskEntity.getUrlEntity().storePath)) {
+        ALog.e(TAG, "证书路径为空");
+        return false;
+      }
+      if (TextUtils.isEmpty(mTaskEntity.getUrlEntity().keyAlias)) {
+        ALog.e(TAG, "证书别名为空");
+        return false;
+      }
+    }
     return b;
   }
 
diff --git a/Aria/src/main/java/com/arialyy/aria/core/download/FtpDownloadTarget.java b/Aria/src/main/java/com/arialyy/aria/core/download/FtpDownloadTarget.java
index 8494ec20..1c19c66c 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/download/FtpDownloadTarget.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/download/FtpDownloadTarget.java
@@ -17,10 +17,12 @@ package com.arialyy.aria.core.download;
 
 import android.support.annotation.CheckResult;
 import android.support.annotation.NonNull;
+import android.text.TextUtils;
 import com.arialyy.aria.core.common.ftp.FTPSConfig;
 import com.arialyy.aria.core.common.ftp.FtpDelegate;
 import com.arialyy.aria.core.inf.AbsTaskEntity;
 import com.arialyy.aria.core.inf.IFtpTarget;
+import com.arialyy.aria.util.ALog;
 import com.arialyy.aria.util.CommonUtil;
 import java.net.Proxy;
 
@@ -61,6 +63,20 @@ public class FtpDownloadTarget extends BaseNormalTarget<FtpDownloadTarget>
     return new FTPSConfig<>(this);
   }
 
+  @Override protected boolean checkEntity() {
+    if (mTaskEntity.getUrlEntity().isFtps){
+      if (TextUtils.isEmpty(mTaskEntity.getUrlEntity().storePath)){
+        ALog.e(TAG, "证书路径为空");
+        return false;
+      }
+      if (TextUtils.isEmpty(mTaskEntity.getUrlEntity().keyAlias)){
+        ALog.e(TAG, "证书别名为空");
+        return false;
+      }
+    }
+    return super.checkEntity();
+  }
+
   /**
    * 设置文件保存文件夹路径
    *
diff --git a/Aria/src/main/java/com/arialyy/aria/core/upload/BaseNormalTarget.java b/Aria/src/main/java/com/arialyy/aria/core/upload/BaseNormalTarget.java
index 805bc1e5..b56ad759 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/upload/BaseNormalTarget.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/upload/BaseNormalTarget.java
@@ -80,6 +80,16 @@ abstract class BaseNormalTarget<TARGET extends AbsUploadTarget>
       mEntity.save();
       mTaskEntity.save();
     }
+    if (mTaskEntity.getUrlEntity().isFtps) {
+      if (TextUtils.isEmpty(mTaskEntity.getUrlEntity().storePath)) {
+        ALog.e(TAG, "证书路径为空");
+        return false;
+      }
+      if (TextUtils.isEmpty(mTaskEntity.getUrlEntity().keyAlias)) {
+        ALog.e(TAG, "证书别名为空");
+        return false;
+      }
+    }
     return b;
   }
 
diff --git a/DEV_LOG.md b/DEV_LOG.md
index 2f0f0626..a4c11901 100644
--- a/DEV_LOG.md
+++ b/DEV_LOG.md
@@ -1,9 +1,10 @@
 ## 开发日志
   + v_3.4.8
-    - 组合任务新增`updateUrls(List<String>)`用于修改组合子任务的url，[see](https://aria.laoyuyu.me/aria_doc/api/task_handle.html#%E6%9B%B4%E6%96%B0%E4%BB%BB%E5%8A%A1url)
+    - 组合任务新增`updateUrls(List<String>)`用于修改组合子任务的url，[see](https://aria.laoyuyu.me/aria_doc/api/update_url.html)
     - 出于安全考虑，FTP数据库去掉密码的保存
-    - 增加FTPS支持 [see]()
-    - 增加速度限制支持[see]()
+    - 增加FTPS支持 [see](https://aria.laoyuyu.me/aria_doc/download/ftps.html)
+    - 增加速度限制支持[see](https://aria.laoyuyu.me/aria_doc/api/speed_handle.html)
+    - 增加内存空间不足验证
   + v_3.4.7
     - 修复分块任务异常操作导致的问题
   + v_3.4.6
diff --git a/README.md b/README.md
index 9a9668aa..e4e13d78 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ Aria有以下特点：
    - 支持HTTP任务组\FTP文件夹，断点续传下载
    - 支持HTTP表单上传
    - 支持文件FTP断点续传上传
+   - 支持FTPS/SFTP断点续传，[see](https://aria.laoyuyu.me/aria_doc/download/ftps.html)
  + 支持https地址下载
    - 在配置文件中很容易就可以设置CA证书的信息
  + 支持[多线程分块下载](https://aria.laoyuyu.me/aria_doc/start/config.html)，能更有效的发挥机器IO性能
@@ -31,8 +32,8 @@ Aria有以下特点：
 [![Download](https://api.bintray.com/packages/arialyy/maven/AriaApi/images/download.svg)](https://bintray.com/arialyy/maven/AriaApi/_latestVersion)
 [![Download](https://api.bintray.com/packages/arialyy/maven/AriaCompiler/images/download.svg)](https://bintray.com/arialyy/maven/AriaCompiler/_latestVersion)
 ```java
-compile 'com.arialyy.aria:aria-core:3.4.7'
-annotationProcessor 'com.arialyy.aria:aria-compiler:3.4.7'
+compile 'com.arialyy.aria:aria-core:3.4.8'
+annotationProcessor 'com.arialyy.aria:aria-compiler:3.4.8'
 ```
 如果出现android support，请将 `compile 'com.arialyy.aria:aria-core:<last-version>'`替换为
 ```
@@ -100,8 +101,12 @@ protected void onCreate(Bundle savedInstanceState) {
 
 
 ### 版本日志
-  + v_3.4.7
-    - 修复分块任务异常操作导致的问题
+  + v_3.4.8
+    - 组合任务新增`updateUrls(List<String>)`用于修改组合子任务的url，[see](https://aria.laoyuyu.me/aria_doc/api/update_url.html)
+    - 出于安全考虑，FTP数据库去掉密码的保存
+    - 增加FTPS支持 [see](https://aria.laoyuyu.me/aria_doc/download/ftps.html)
+    - 增加速度限制支持[see](https://aria.laoyuyu.me/aria_doc/api/speed_handle.html)
+    - 增加内存空间不足验证
 
 [更多版本记录](https://github.com/AriaLyy/Aria/blob/master/DEV_LOG.md)
 
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 36686969..c29c9966 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -17,9 +17,9 @@
     <!--android:name=".download.group.DownloadGroupActivity"-->
     <!--android:name=".test.AnyRunActivity"-->
     <!--android:name=".test.TestFTPDirActivity"-->
-    <!--android:name=".test.TestFTPActivity"-->
+        <!--android:name=".download.SingleTaskActivity"-->
     <activity
-        android:name=".download.SingleTaskActivity"
+    android:name=".test.TestFTPActivity"
         android:label="@string/app_name">
       <intent-filter>
         <action android:name="android.intent.action.MAIN"/>
diff --git a/app/src/main/java/com/arialyy/simple/test/TestFTPActivity.java b/app/src/main/java/com/arialyy/simple/test/TestFTPActivity.java
index 7be6bf1b..3ca181e2 100644
--- a/app/src/main/java/com/arialyy/simple/test/TestFTPActivity.java
+++ b/app/src/main/java/com/arialyy/simple/test/TestFTPActivity.java
@@ -6,6 +6,7 @@ import android.util.Log;
 import android.view.View;
 import com.arialyy.annotations.Upload;
 import com.arialyy.aria.core.Aria;
+import com.arialyy.aria.core.common.ProtocolType;
 import com.arialyy.aria.core.common.RequestEnum;
 import com.arialyy.aria.core.upload.UploadTask;
 import com.arialyy.aria.util.ALog;
@@ -83,9 +84,8 @@ public class TestFTPActivity extends BaseActivity<ActivityTestBinding> {
             .setUploadUrl(URL)
             .setExtendField("韩寒哈大双")
             .asFtps()
-            .setStorePath("/mnt/sdcard/Download/server.crt")
-            .setAlias("www.laoyuyu.me")
-            .setStorePass("123456")
+            //.setStorePath("/mnt/sdcard/Download/server.crt")
+            //.setAlias("www.laoyuyu.me")
             .start();
         //Uri uri = Uri.parse("ftp://z:z@dygod18.com:21211/[电影天堂www.dy2018.com]猩球崛起3：终极之战BD国英双语中英双字.mkv");
         //ALog.d(TAG, "sh = " + uri.getScheme() + ", user = " + uri.getUserInfo() + ", host = " + uri.getHost() + ", port = " + uri.getPort() + " remotePath = " + uri.getPath());
diff --git a/build.gradle b/build.gradle
index 2c1ceeb5..5f5e6e62 100644
--- a/build.gradle
+++ b/build.gradle
@@ -39,7 +39,7 @@ task clean(type: Delete) {
 ext {
   userOrg = 'arialyy'
   groupId = 'com.arialyy.aria'
-  publishVersion = '3.4.7'
+  publishVersion = '3.4.8'
 //  publishVersion = '1.0.3'  //FTP插件
   repoName='maven'
   desc = 'android 下载框架'