diff --git a/Aria/src/main/java/com/arialyy/aria/core/common/AbsThreadTask.java b/Aria/src/main/java/com/arialyy/aria/core/common/AbsThreadTask.java
index e6d4ba6c..82796d94 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/common/AbsThreadTask.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/common/AbsThreadTask.java
@@ -140,8 +140,7 @@ public abstract class AbsThreadTask<ENTITY extends AbsEntity, TASK_ENTITY extend
     synchronized (AriaManager.LOCK) {
       if (mConfig.SUPPORT_BP) {
         STATE.CANCEL_NUM++;
-        Log.d(TAG,
-            "任务【" + mConfig.TEMP_FILE.getName() + "】thread__" + mConfig.THREAD_ID + "__取消下载");
+        Log.d(TAG, "任务【" + mConfig.TEMP_FILE.getName() + "】thread__" + mConfig.THREAD_ID + "__取消");
         if (STATE.isCancel()) {
           File configFile = new File(mConfigFPath);
           if (configFile.exists()) {
@@ -168,9 +167,9 @@ public abstract class AbsThreadTask<ENTITY extends AbsEntity, TASK_ENTITY extend
   protected void fail(long currentLocation, String msg, Exception ex) {
     synchronized (AriaManager.LOCK) {
       try {
-        STATE.FAIL_NUM++;
-        STATE.isRunning = false;
-        STATE.isStop = true;
+        //STATE.FAIL_NUM++;
+        //STATE.isRunning = false;
+        //STATE.isStop = true;
         if (ex != null) {
           Log.e(TAG, msg + "\n" + CommonUtil.getPrintException(ex));
         } else {
@@ -178,10 +177,11 @@ public abstract class AbsThreadTask<ENTITY extends AbsEntity, TASK_ENTITY extend
         }
         if (mConfig.SUPPORT_BP) {
           writeConfig(false, currentLocation);
-          if (STATE.isFail()) {
-            Log.e(TAG, "任务【" + mConfig.TEMP_FILE.getName() + "】执行失败");
-            mListener.onFail(true);
-          }
+          //if (STATE.isFail()) {
+          //  Log.e(TAG, "任务【" + mConfig.TEMP_FILE.getName() + "】执行失败");
+          //  mListener.onFail(true);
+          //}
+          retryThis(true);
         } else {
           Log.e(TAG, "任务【" + mConfig.TEMP_FILE.getName() + "】执行失败");
           mListener.onFail(true);
@@ -193,20 +193,32 @@ public abstract class AbsThreadTask<ENTITY extends AbsEntity, TASK_ENTITY extend
   }
 
   /**
-   * 重试当前线程
+   * 重试当前线程，如果其中一条线程已经下载失败，则任务该任务下载失败，并且停止该任务的所有线程
+   *
+   * @param needRetry 是否可以重试
    */
   private void retryThis(boolean needRetry) {
     if (mFailNum < RETRY_NUM && needRetry) {
-      if (mFailTimer != null){
+      if (mFailTimer != null) {
         mFailTimer.purge();
         mFailTimer.cancel();
       }
-      mFailTimer = new Timer();
+      mFailTimer = new Timer(true);
       mFailTimer.schedule(new TimerTask() {
         @Override public void run() {
+          mFailNum++;
+          Log.w(TAG,
+              "任务【" + mConfig.TEMP_FILE.getName() + "】thread__" + mConfig.THREAD_ID + "__正在重试");
+          mConfig.START_LOCATION = mChildCurrentLocation;
           AbsThreadTask.this.run();
         }
       }, RETRY_INTERVAL);
+    } else {
+      STATE.FAIL_NUM++;
+      STATE.isRunning = false;
+      STATE.isStop = true;
+      Log.e(TAG, "任务【" + mConfig.TEMP_FILE.getName() + "】执行失败");
+      mListener.onFail(true);
     }
   }
 
diff --git a/Aria/src/main/java/com/arialyy/aria/core/download/BaseGroupTarget.java b/Aria/src/main/java/com/arialyy/aria/core/download/BaseGroupTarget.java
index e6e5c684..e38a422b 100644
--- a/Aria/src/main/java/com/arialyy/aria/core/download/BaseGroupTarget.java
+++ b/Aria/src/main/java/com/arialyy/aria/core/download/BaseGroupTarget.java
@@ -138,10 +138,20 @@ abstract class BaseGroupTarget<TARGET extends AbsTarget, TASK_ENTITY extends Abs
     }
   }
 
+  /**
+   * 设置子任务文件名，该方法必须在{@link #setDownloadDirPath(String)}之后调用，否则不生效
+   *
+   * @see #setSubFileName(List)
+   */
+  @Deprecated public TARGET setSubTaskFileName(List<String> subTaskFileName) {
+
+    return setSubFileName(subTaskFileName);
+  }
+
   /**
    * 设置子任务文件名，该方法必须在{@link #setDownloadDirPath(String)}之后调用，否则不生效
    */
-  public TARGET setSubTaskFileName(List<String> subTaskFileName) {
+  public TARGET setSubFileName(List<String> subTaskFileName) {
     if (subTaskFileName == null || subTaskFileName.isEmpty()) return (TARGET) this;
     mSubTaskFileName.addAll(subTaskFileName);
     if (mUrls.size() != subTaskFileName.size()) {
@@ -187,8 +197,8 @@ abstract class BaseGroupTarget<TARGET extends AbsTarget, TASK_ENTITY extends Abs
     for (int i = 0, len = mUrls.size(); i < len; i++) {
       DownloadEntity entity = new DownloadEntity();
       entity.setUrl(mUrls.get(i));
-      String fileName = mSubTaskFileName.isEmpty() ? createFileName(entity.getUrl())
-          : mSubTaskFileName.get(i);
+      String fileName =
+          mSubTaskFileName.isEmpty() ? createFileName(entity.getUrl()) : mSubTaskFileName.get(i);
       entity.setDownloadPath(mEntity.getDirPath() + "/" + fileName);
       entity.setGroupName(mGroupName);
       entity.setGroupChild(true);
@@ -198,5 +208,4 @@ abstract class BaseGroupTarget<TARGET extends AbsTarget, TASK_ENTITY extends Abs
     }
     return list;
   }
-
 }
diff --git a/app/src/main/java/com/arialyy/simple/download/DownloadModule.java b/app/src/main/java/com/arialyy/simple/download/DownloadModule.java
index c4e84c1a..defc8d91 100644
--- a/app/src/main/java/com/arialyy/simple/download/DownloadModule.java
+++ b/app/src/main/java/com/arialyy/simple/download/DownloadModule.java
@@ -20,10 +20,12 @@ import android.content.Context;
 import android.content.res.Resources;
 import android.os.Environment;
 import com.arialyy.aria.core.download.DownloadEntity;
+import com.arialyy.aria.util.CommonUtil;
 import com.arialyy.simple.R;
-import com.arialyy.simple.download.multi_download.FileListEntity;
 import com.arialyy.simple.base.BaseModule;
+import com.arialyy.simple.download.multi_download.FileListEntity;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.LinkedList;
 import java.util.List;
 
@@ -54,14 +56,14 @@ public class DownloadModule extends BaseModule {
    * 创建下载地址
    */
   public List<FileListEntity> createMultiTestList() {
-    String[] names = getContext().getResources().getStringArray(R.array.file_nams);
-    String[] downloadUrl = getContext().getResources().getStringArray(R.array.download_url);
+    String[] names = getStringArray(R.array.file_nams);
+    String[] downloadUrl = getStringArray(R.array.download_url);
     List<FileListEntity> list = new ArrayList<>();
     int i = 0;
     for (String name : names) {
       FileListEntity entity = new FileListEntity();
       entity.name = name;
-      entity.downloadUrl = downloadUrl[i];
+      entity.key = downloadUrl[i];
       entity.downloadPath = Environment.getExternalStorageDirectory() + "/Download/" + name;
       list.add(entity);
       i++;
@@ -69,6 +71,33 @@ public class DownloadModule extends BaseModule {
     return list;
   }
 
+  private String[] getStringArray(int array) {
+    return getContext().getResources().getStringArray(array);
+  }
+
+  /**
+   * 创建任务组
+   */
+  public List<FileListEntity> createGroupTestList() {
+    List<FileListEntity> list = new ArrayList<>();
+    list.add(createGroupEntity(R.array.group_urls, R.array.group_names, "任务组_0"));
+    list.add(createGroupEntity(R.array.group_urls_1, R.array.group_names_1, "任务组_1"));
+    list.add(createGroupEntity(R.array.group_urls_2, R.array.group_names_2, "任务组_2"));
+    list.add(createGroupEntity(R.array.group_urls_3, R.array.group_names_3, "任务组_3"));
+    return list;
+  }
+
+  private FileListEntity createGroupEntity(int urls, int names, String alias) {
+    FileListEntity entity = new FileListEntity();
+    entity.urls = getStringArray(urls);
+    entity.names = getStringArray(names);
+    entity.isGroup = true;
+    entity.name = alias;
+    entity.key = CommonUtil.getMd5Code(Arrays.asList(entity.urls));
+    entity.downloadPath = Environment.getExternalStorageDirectory() + "/Download/" + alias;
+    return entity;
+  }
+
   /**
    * 创建下载实体，Aria也可以通过下载实体启动下载
    */
@@ -80,5 +109,4 @@ public class DownloadModule extends BaseModule {
     entity.setDownloadPath(path);
     return entity;
   }
-
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java b/app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java
index c96d01cc..ac29dfa7 100644
--- a/app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java
+++ b/app/src/main/java/com/arialyy/simple/download/SingleTaskActivity.java
@@ -30,10 +30,13 @@ import com.arialyy.aria.core.Aria;
 import com.arialyy.aria.core.download.DownloadTarget;
 import com.arialyy.aria.core.download.DownloadTask;
 import com.arialyy.aria.core.inf.IEntity;
+import com.arialyy.aria.util.CommonUtil;
+import com.arialyy.frame.util.show.L;
 import com.arialyy.frame.util.show.T;
 import com.arialyy.simple.R;
 import com.arialyy.simple.base.BaseActivity;
 import com.arialyy.simple.databinding.ActivitySingleBinding;
+import java.io.File;
 
 public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
 
@@ -157,6 +160,7 @@ public class SingleTaskActivity extends BaseActivity<ActivitySingleBinding> {
     mCancel.setEnabled(false);
     setBtState(true);
     getBinding().setSpeed("");
+    L.d(TAG, "md5Code ==> " + CommonUtil.getFileMD5(new File(task.getDownloadPath())));
   }
 
   @Download.onNoSupportBreakPoint(DOWNLOAD_URL)
diff --git a/app/src/main/java/com/arialyy/simple/download/multi_download/FileListAdapter.java b/app/src/main/java/com/arialyy/simple/download/multi_download/FileListAdapter.java
index e423f79a..d0b4df38 100644
--- a/app/src/main/java/com/arialyy/simple/download/multi_download/FileListAdapter.java
+++ b/app/src/main/java/com/arialyy/simple/download/multi_download/FileListAdapter.java
@@ -26,6 +26,7 @@ import com.arialyy.aria.core.Aria;
 import com.arialyy.simple.R;
 import com.arialyy.simple.base.adapter.AbsHolder;
 import com.arialyy.simple.base.adapter.AbsRVAdapter;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
@@ -43,8 +44,8 @@ final class FileListAdapter extends AbsRVAdapter<FileListEntity, FileListAdapter
   public FileListAdapter(Context context, List<FileListEntity> data) {
     super(context, data);
     for (int i = 0, len = data.size(); i < len; i++) {
-      mBtStates.put(data.get(i).downloadUrl, true);
-      mPositions.put(data.get(i).downloadUrl, i);
+      mBtStates.put(data.get(i).key, true);
+      mPositions.put(data.get(i).key, i);
     }
   }
 
@@ -59,17 +60,27 @@ final class FileListAdapter extends AbsRVAdapter<FileListEntity, FileListAdapter
   @Override
   protected void bindData(FileListHolder holder, int position, final FileListEntity item) {
     holder.name.setText("文件名：" + item.name);
-    holder.url.setText("下载地址：" + item.downloadUrl);
+    holder.url.setText("下载地址：" + item.key);
+    holder.url.setVisibility(item.isGroup ? View.GONE : View.VISIBLE);
     holder.path.setText("保存路径：" + item.downloadPath);
-    if (mBtStates.get(item.downloadUrl)) {
+    if (mBtStates.get(item.key)) {
       holder.bt.setEnabled(true);
       holder.bt.setOnClickListener(new View.OnClickListener() {
         @Override public void onClick(View v) {
           Toast.makeText(getContext(), "开始下载：" + item.name, Toast.LENGTH_SHORT).show();
-          Aria.download(getContext())
-              .load(item.downloadUrl)
-              .setDownloadPath(item.downloadPath)
-              .start();
+          if (item.isGroup) {
+            Aria.download(getContext())
+                .load(Arrays.asList(item.urls))
+                .setSubFileName(Arrays.asList(item.names))
+                .setDownloadDirPath(item.downloadPath)
+                .setGroupAlias(item.name)
+                .start();
+          } else {
+            Aria.download(getContext())
+                .load(item.key)
+                .setDownloadPath(item.downloadPath)
+                .start();
+          }
         }
       });
     } else {
diff --git a/app/src/main/java/com/arialyy/simple/download/multi_download/FileListEntity.java b/app/src/main/java/com/arialyy/simple/download/multi_download/FileListEntity.java
index a33b3bd4..4e6e9b38 100644
--- a/app/src/main/java/com/arialyy/simple/download/multi_download/FileListEntity.java
+++ b/app/src/main/java/com/arialyy/simple/download/multi_download/FileListEntity.java
@@ -21,5 +21,8 @@ package com.arialyy.simple.download.multi_download;
  */
 
 public class FileListEntity {
-  public String name, downloadUrl, downloadPath;
+  public String name, key, downloadPath;
+  public boolean isGroup = false;
+
+  public String[] urls, names;
 }
diff --git a/app/src/main/java/com/arialyy/simple/download/multi_download/MultiTaskActivity.java b/app/src/main/java/com/arialyy/simple/download/multi_download/MultiTaskActivity.java
index 77e14e0d..ab7efc65 100644
--- a/app/src/main/java/com/arialyy/simple/download/multi_download/MultiTaskActivity.java
+++ b/app/src/main/java/com/arialyy/simple/download/multi_download/MultiTaskActivity.java
@@ -24,14 +24,14 @@ import android.support.v7.widget.Toolbar;
 import android.view.View;
 import butterknife.Bind;
 import com.arialyy.annotations.Download;
+import com.arialyy.annotations.DownloadGroup;
 import com.arialyy.aria.core.Aria;
+import com.arialyy.aria.core.download.DownloadGroupTask;
 import com.arialyy.aria.core.download.DownloadTask;
-import com.arialyy.frame.util.show.T;
 import com.arialyy.simple.R;
 import com.arialyy.simple.base.BaseActivity;
 import com.arialyy.simple.databinding.ActivityMultiBinding;
 import com.arialyy.simple.download.DownloadModule;
-import com.arialyy.simple.download.SingleTaskActivity;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -52,6 +52,7 @@ public class MultiTaskActivity extends BaseActivity<ActivityMultiBinding> {
     super.init(savedInstanceState);
     Aria.download(this).register();
     setTitle("多任务下载");
+    mData.addAll(getModule(DownloadModule.class).createGroupTestList());
     mData.addAll(getModule(DownloadModule.class).createMultiTestList());
     mAdapter = new FileListAdapter(this, mData);
     mList.setLayoutManager(new LinearLayoutManager(this));
@@ -93,7 +94,32 @@ public class MultiTaskActivity extends BaseActivity<ActivityMultiBinding> {
     mAdapter.updateBtState(task.getKey(), true);
   }
 
-  @Download.onTaskComplete void taskComplete(DownloadTask task) {
+  //############################### 任务组 ##############################
+  @DownloadGroup.onTaskComplete void groupTaskComplete(DownloadGroupTask task) {
+    mAdapter.updateBtState(task.getKey(), true);
+  }
+
+  @DownloadGroup.onTaskStart void groupTaskStart(DownloadGroupTask task) {
+    mAdapter.updateBtState(task.getKey(), false);
+  }
+
+  @DownloadGroup.onTaskResume void groupTaskResume(DownloadGroupTask task) {
+    mAdapter.updateBtState(task.getKey(), false);
+  }
+
+  @DownloadGroup.onTaskStop void groupTaskStop(DownloadGroupTask task) {
+    mAdapter.updateBtState(task.getKey(), true);
+  }
+
+  @DownloadGroup.onTaskCancel void groupTaskCancel(DownloadGroupTask task) {
+    mAdapter.updateBtState(task.getKey(), true);
+  }
+
+  @DownloadGroup.onTaskFail void groupTaskFail(DownloadGroupTask task) {
+    mAdapter.updateBtState(task.getKey(), true);
+  }
+
+  @DownloadGroup.onTaskComplete void taskComplete(DownloadGroupTask task) {
     mAdapter.updateBtState(task.getKey(), true);
   }
 
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 5d127bee..02bc4a8c 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -50,10 +50,23 @@
     <!--<item>https://res5.d.cn/5a6a3384c1b2be1a65d84b914e6a6fef697637578b6db2eb1056d50b09cf1dcf289d4045df7ef95746e498e3d6a848ab84c89b77aa60194e2c48e5a7cb748265.apk</item>-->
     <!--<item>https://res5.d.cn/5a6a3384c1b2be1a52034c72752e8475414630ebc69318b84ef584115ebf5eaaab945ae07b7fe3596afc72a7940ff328d4a9553f6ae92d6c09ba4bfb533137f6.apk</item>-->
     <!--<item>https://res5.d.cn/5a6a3384c1b2be1a426f06bfc69034d69c44ae1a01da180cab8e59bd1a5e1a784bac46ba0c64579d14f0e80a4ce4f068af89b0369a393456f4f449a8829cad5c.apk</item>-->
-
     <item>http://static.gaoshouyou.com/d/12/0d/7f120f50c80d2e7b8c4ba24ece4f9cdd.apk</item>
     <item>http://static.ilongyuan.cn/rayark/RayarkFZ_2.0.7.apk</item>
+  </string-array>
+
+  <string-array name="group_urls_1">
+    <item>http://droidweb.smartgame-down.com/201708171123/C183E9C2010C7CABACFB398250A3DB75/new/game1/1/107001/qq_1502875308555.apk?f=web_1</item>
+    <item>http://droidweb.smartgame-down.com/201708171124/6E5AF91791661236D0A2F60125D3B45F/new/game1/93/113093/00D42A6AA63A039485F510C2E4D69BAA_1498831237.apk?f=web_1</item>
+  </string-array>
+
+  <string-array name="group_urls_2">
+    <item>http://droidweb.smartgame-down.com/201708171125/005BCF0FFBB75510958D14074286B25F/new/game1/2/106202/qqkj_1502868291416.apk?f=web_1</item>
+    <item>http://droidweb.smartgame-down.com/201708171126/05FAAA4FD294BC63AA8F792636961D19/new/game1/72/110472/com.taobao.taobao-6.9.0-157-0629_1498744826.apk?f=web_1</item>
+  </string-array>
 
+  <string-array name="group_urls_3">
+    <item>http://droidweb.smartgame-down.com/201708171127/F55445FD8B7BBA8D72CA4B7D7BD91F90/new/game1/84/33184/txtim_1502854269836.apk?f=web_1</item>
+    <item>http://droidweb.smartgame-down.com/201708171128/5C4D0289F0B83690BF252420F473FB9F/new/game1/46/108046/com.shuqi.controller-10.5.2.50-137-0703_1499083244.apk?f=web_1</item>
   </string-array>
 
   <string-array name="group_names">
@@ -62,4 +75,19 @@
     <!--<item>天魔幻想.apk</item>-->
   </string-array>
 
+  <string-array name="group_names_1">
+    <item>QQ.apk</item>
+    <item>百度贴吧.apk</item>
+  </string-array>
+
+  <string-array name="group_names_2">
+    <item>QQ空间.apk</item>
+    <item>淘宝.apk</item>
+  </string-array>
+
+  <string-array name="group_names_3">
+    <item>TIM.apk</item>
+    <item>书旗小说.apk</item>
+  </string-array>
+
 </resources>