diff --git a/app/src/main/java/com/arialyy/simple/activity/MultiTaskActivity.java b/app/src/main/java/com/arialyy/simple/activity/MultiTaskActivity.java
index c3b5284b..9773036f 100644
--- a/app/src/main/java/com/arialyy/simple/activity/MultiTaskActivity.java
+++ b/app/src/main/java/com/arialyy/simple/activity/MultiTaskActivity.java
@@ -7,6 +7,8 @@ import android.os.Bundle;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.Toolbar;
+import android.view.View;
+import android.widget.Button;
 import butterknife.Bind;
 import com.arialyy.downloadutil.core.DownloadEntity;
 import com.arialyy.downloadutil.core.DownloadManager;
@@ -15,6 +17,7 @@ import com.arialyy.simple.R;
 import com.arialyy.simple.adapter.DownloadAdapter;
 import com.arialyy.simple.base.BaseActivity;
 import com.arialyy.simple.databinding.ActivityMultiBinding;
+import com.arialyy.simple.dialog.DownloadNumDialog;
 import com.arialyy.simple.module.DownloadModule;
 
 /**
@@ -86,6 +89,11 @@ public class MultiTaskActivity extends BaseActivity<ActivityMultiBinding> {
     }
   };
 
+  public void onClick(View view){
+    DownloadNumDialog dialog = new DownloadNumDialog();
+    dialog.show(getSupportFragmentManager(), "download_num");
+  }
+
   @Override protected void onResume() {
     super.onResume();
     registerReceiver(mReceiver, getModule(DownloadModule.class).getDownloadFilter());
@@ -95,4 +103,11 @@ public class MultiTaskActivity extends BaseActivity<ActivityMultiBinding> {
     super.onDestroy();
     unregisterReceiver(mReceiver);
   }
+
+  @Override protected void dataCallback(int result, Object data) {
+    super.dataCallback(result, data);
+    if (result == DownloadNumDialog.RESULT_CODE){
+      mAdapter.setDownloadNum(Integer.parseInt(data + ""));
+    }
+  }
 }
diff --git a/app/src/main/java/com/arialyy/simple/adapter/DownloadAdapter.java b/app/src/main/java/com/arialyy/simple/adapter/DownloadAdapter.java
index 5ef1bf35..87108708 100644
--- a/app/src/main/java/com/arialyy/simple/adapter/DownloadAdapter.java
+++ b/app/src/main/java/com/arialyy/simple/adapter/DownloadAdapter.java
@@ -133,6 +133,10 @@ public class DownloadAdapter extends AbsRVAdapter<DownloadEntity, DownloadAdapte
     });
   }
 
+  public void setDownloadNum(int num) {
+    mManager.getTaskQueue().setDownloadNum(num);
+  }
+
   private String covertCurrentSize(long currentSize) {
     String size = CommonUtil.formatFileSize(currentSize);
     return size.substring(0, size.length() - 1);
diff --git a/app/src/main/java/com/arialyy/simple/base/BaseDialog.java b/app/src/main/java/com/arialyy/simple/base/BaseDialog.java
new file mode 100644
index 00000000..9911d2fe
--- /dev/null
+++ b/app/src/main/java/com/arialyy/simple/base/BaseDialog.java
@@ -0,0 +1,18 @@
+package com.arialyy.simple.base;
+
+import android.databinding.ViewDataBinding;
+import android.os.Bundle;
+import com.arialyy.frame.core.AbsDialogFragment;
+
+/**
+ * Created by “AriaLyy@outlook.com” on 2016/11/14.
+ */
+public abstract class BaseDialog<VB extends ViewDataBinding> extends AbsDialogFragment<VB>{
+  @Override protected void init(Bundle savedInstanceState) {
+
+  }
+
+  @Override protected void dataCallback(int result, Object data) {
+
+  }
+}
diff --git a/app/src/main/java/com/arialyy/simple/dialog/DownloadNumDialog.java b/app/src/main/java/com/arialyy/simple/dialog/DownloadNumDialog.java
new file mode 100644
index 00000000..90933a7c
--- /dev/null
+++ b/app/src/main/java/com/arialyy/simple/dialog/DownloadNumDialog.java
@@ -0,0 +1,46 @@
+package com.arialyy.simple.dialog;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.RadioButton;
+import android.widget.RadioGroup;
+import butterknife.Bind;
+import com.arialyy.simple.R;
+import com.arialyy.simple.base.BaseDialog;
+import com.arialyy.simple.databinding.DialogDownloadNumBinding;
+
+/**
+ * Created by “AriaLyy@outlook.com” on 2016/11/14.
+ * 设置下载数量对话框
+ */
+public class DownloadNumDialog extends BaseDialog<DialogDownloadNumBinding> implements RadioGroup.OnCheckedChangeListener{
+  public static final int RESULT_CODE = 1001;
+  @Bind(R.id.cancel) Button mCancel;
+  @Bind(R.id.rg) RadioGroup mRg;
+
+  @Override protected int setLayoutId() {
+    return R.layout.dialog_download_num;
+  }
+
+  @Override protected void init(Bundle savedInstanceState) {
+    super.init(savedInstanceState);
+    mCancel.setOnClickListener(new View.OnClickListener() {
+      @Override public void onClick(View v) {
+        dismiss();
+      }
+    });
+    for (int i = 0, count = mRg.getChildCount(); i < count; i++) {
+      RadioButton rb = (RadioButton) mRg.getChildAt(i);
+      rb.setId(i);
+    }
+    mRg.setOnCheckedChangeListener(this);
+  }
+
+  @Override public void onCheckedChanged(RadioGroup group, int checkedId) {
+    RadioButton rb = (RadioButton) group.getChildAt(checkedId);
+    if (rb.isChecked()) {
+      getSimplerModule().onDialog(RESULT_CODE, rb.getTag());
+    }
+  }
+}
diff --git a/app/src/main/res/layout/activity_multi.xml b/app/src/main/res/layout/activity_multi.xml
index 557259fb..ef85f1b1 100644
--- a/app/src/main/res/layout/activity_multi.xml
+++ b/app/src/main/res/layout/activity_multi.xml
@@ -1,9 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <layout
     xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     >
 
-  <LinearLayout
+  <RelativeLayout
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:orientation="vertical"
@@ -14,7 +15,19 @@
         android:id="@+id/list"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
+        android:layout_below="@+id/toolbar"
         />
 
-  </LinearLayout>
+    <Button
+        android:onClick="onClick"
+        android:id="@+id/num"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentBottom="true"
+        android:layout_alignParentRight="true"
+        android:text="下载数设置"
+        android:layout_margin="16dp"
+        />
+
+      </RelativeLayout>
 </layout>
diff --git a/app/src/main/res/layout/dialog_download_num.xml b/app/src/main/res/layout/dialog_download_num.xml
new file mode 100644
index 00000000..65e6464f
--- /dev/null
+++ b/app/src/main/res/layout/dialog_download_num.xml
@@ -0,0 +1,85 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+  <LinearLayout
+      android:layout_width="match_parent"
+      android:layout_height="wrap_content"
+      android:orientation="vertical"
+      >
+
+    <TextView
+        android:textColor="@color/colorPrimary"
+        android:textSize="16sp"
+        android:layout_gravity="center_horizontal"
+        android:padding="10dp"
+        android:text="设置下载数"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        />
+
+    <View
+        android:background="@color/black"
+        android:layout_width="match_parent"
+        android:layout_height="1dp"/>
+
+    <RadioGroup
+        android:id="@+id/rg"
+        android:padding="16dp"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        >
+
+      <RadioButton
+          android:tag="2"
+          android:text="下载线程数：2"
+          android:layout_width="match_parent"
+          android:layout_height="wrap_content"
+          android:layoutDirection="rtl"
+          android:textAlignment="textStart"
+          android:layout_gravity="start"
+          />
+
+      <RadioButton
+          android:tag="3"
+          android:text="下载线程数：3"
+          android:layout_width="match_parent"
+          android:layout_height="wrap_content"
+          android:layoutDirection="rtl"
+          android:textAlignment="textStart"
+          android:layout_gravity="start"
+          />
+
+      <RadioButton
+          android:tag="4"
+          android:text="下载线程数：4"
+          android:layout_width="match_parent"
+          android:layout_height="wrap_content"
+          android:layoutDirection="rtl"
+          android:textAlignment="textStart"
+          android:layout_gravity="start"
+          />
+
+    </RadioGroup>
+
+
+    <View
+        android:background="@color/black"
+        android:layout_width="match_parent"
+        android:layout_height="1dp"/>
+
+
+    <Button
+        android:id="@+id/cancel"
+        android:text="取消"
+        style="?buttonBarButtonStyle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        />
+
+  </LinearLayout>
+
+</layout>
\ No newline at end of file
diff --git a/downloadutil/src/main/java/com/arialyy/downloadutil/core/queue/DownloadTaskQueue.java b/downloadutil/src/main/java/com/arialyy/downloadutil/core/queue/DownloadTaskQueue.java
index da3f3344..e2765cf9 100644
--- a/downloadutil/src/main/java/com/arialyy/downloadutil/core/queue/DownloadTaskQueue.java
+++ b/downloadutil/src/main/java/com/arialyy/downloadutil/core/queue/DownloadTaskQueue.java
@@ -95,7 +95,7 @@ public class DownloadTaskQueue implements ITaskQueue {
   }
 
   @Override public void setDownloadNum(int downloadNum) {
-
+    mExecutePool.setDownloadNum(downloadNum);
   }
 
   @Override public Task createTask(DownloadEntity entity) {
diff --git a/downloadutil/src/main/java/com/arialyy/downloadutil/core/queue/pool/ExecutePool.java b/downloadutil/src/main/java/com/arialyy/downloadutil/core/queue/pool/ExecutePool.java
index e84715d0..eb45ba64 100644
--- a/downloadutil/src/main/java/com/arialyy/downloadutil/core/queue/pool/ExecutePool.java
+++ b/downloadutil/src/main/java/com/arialyy/downloadutil/core/queue/pool/ExecutePool.java
@@ -65,7 +65,7 @@ public class ExecutePool implements IPool {
    *
    * @param downloadNum 下载数
    */
-  private void setDownloadNum(int downloadNum) {
+  public void setDownloadNum(int downloadNum) {
     try {
       ArrayBlockingQueue<Task> temp = new ArrayBlockingQueue<>(downloadNum);
       Task                     task;