diff --git a/CHANGELOG.md b/CHANGELOG.md
index 36465f8..6ee81d7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Change log
 
+## 2.1.1
+
+use manager to manage ToastFuture
+
+add a method `dismissAllToast` to dismiss all toast.
+
+add a param with showToast to dismiss other toast.
+
 ## 2.1.0
 
 add new params to helper user listen toast dismiss
@@ -22,7 +30,7 @@ support flutter sdk 0.10 ,fix bug
 
 ## 1.0.3
 
-update the textAlign : TextAlign.center
+update the textAlign : TextAlign.center  
 update the overflow: TextOverflow.ellipsis,
 
 ## 1.0.2
diff --git a/README.md b/README.md
index 4eb1150..6a83485 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,6 @@
 # oktoast
 
-[![pub package](https://img.shields.io/pub/v/oktoast.svg)](https://pub.dartlang.org/packages/oktoast)
-![Hex.pm](https://img.shields.io/hexpm/l/plug.svg)
+[![pub package](https://img.shields.io/pub/v/oktoast.svg)](https://pub.dartlang.org/packages/oktoast)![GitHub](https://img.shields.io/github/license/OpenFlutter/flutter_oktoast.svg)[![GitHub stars](https://img.shields.io/github/stars/OpenFlutter/flutter_oktoast.svg?style=social&label=Stars)](https://github.com/OpenFlutter/flutter_oktoast)
 
 A library for flutter.
 
@@ -35,7 +34,7 @@ And you can completely customize the style of toast, because now you can use `sh
 
 ```yaml
 dependencies:
-  oktoast: ^2.1.0
+  oktoast: ^2.1.1
 ```
 
 2.  import library in dart file
@@ -223,3 +222,7 @@ class _MyHomePageState extends State<MyHomePage> {
 
 
 ```
+
+---
+
+Since version `2.1.1`, you can use `dismissAllToast()` to dismiss all toast.
diff --git a/lib/oktoast.dart b/lib/oktoast.dart
index fe75863..377bd34 100644
--- a/lib/oktoast.dart
+++ b/lib/oktoast.dart
@@ -1,3 +1,4 @@
 library oktoast;
 
 export 'src/toast.dart' show showToast, showToastWidget, OKToast, ToastPosition, ToastFuture;
+export 'src/toast_manager.dart' show dismissAllToast;
diff --git a/lib/src/toast.dart b/lib/src/toast.dart
index a26b668..2e0d458 100644
--- a/lib/src/toast.dart
+++ b/lib/src/toast.dart
@@ -3,6 +3,7 @@ library oktoast;
 import 'dart:collection';
 
 import 'package:flutter/material.dart';
+import 'package:oktoast/src/toast_manager.dart';
 
 LinkedHashMap<_OKToastState, BuildContext> _contextMap = LinkedHashMap();
 const _defaultDuration = Duration(
@@ -99,6 +100,7 @@ class _OKToastState extends State<OKToast> {
   }
 }
 
+/// show toast with [msg],
 ToastFuture showToast(
   String msg, {
   BuildContext context,
@@ -108,6 +110,7 @@ ToastFuture showToast(
   Color backgroundColor,
   double radius,
   VoidCallback onDismiss,
+  bool dismissOtherToast = false,
 }) {
   context ??= _contextMap.values.first;
 
@@ -142,14 +145,17 @@ ToastFuture showToast(
     context: context,
     duration: duration,
     onDismiss: onDismiss,
+    dismissOtherToast: dismissOtherToast,
   );
 }
 
+/// show [widget] with oktoast
 ToastFuture showToastWidget(
   Widget widget, {
   BuildContext context,
   Duration duration = _defaultDuration,
   VoidCallback onDismiss,
+  bool dismissOtherToast = false,
 }) {
   context ??= _contextMap.values.first;
   OverlayEntry entry;
@@ -163,6 +169,10 @@ ToastFuture showToastWidget(
     );
   });
 
+  if (dismissOtherToast == true) {
+    ToastManager().dismissAll();
+  }
+
   future = ToastFuture._(entry, onDismiss);
 
   Future.delayed(duration, () {
@@ -170,6 +180,7 @@ ToastFuture showToastWidget(
   });
 
   Overlay.of(context).insert(entry);
+  ToastManager().addFuture(future);
 
   return future;
 }
@@ -259,6 +270,7 @@ class _ToastTheme extends InheritedWidget {
   static _ToastTheme of(BuildContext context) => context.inheritFromWidgetOfExactType(_ToastTheme);
 }
 
+/// use the [dismiss] to dismiss toast.
 class ToastFuture {
   final OverlayEntry _entry;
   final VoidCallback _onDismiss;
@@ -274,5 +286,6 @@ class ToastFuture {
     _isShow = false;
     _entry.remove();
     _onDismiss?.call();
+    ToastManager().removeFuture(this);
   }
 }
diff --git a/lib/src/toast_manager.dart b/lib/src/toast_manager.dart
new file mode 100644
index 0000000..1d4754c
--- /dev/null
+++ b/lib/src/toast_manager.dart
@@ -0,0 +1,33 @@
+import 'toast.dart';
+
+class ToastManager {
+  ToastManager._();
+
+  static ToastManager _instance;
+
+  factory ToastManager() {
+    _instance ??= ToastManager._();
+    return _instance;
+  }
+
+  Set<ToastFuture> toastSet = Set();
+
+  void dismissAll() {
+    toastSet.toList().forEach((v) {
+      v.dismiss();
+    });
+  }
+
+  void removeFuture(ToastFuture future) {
+    toastSet.remove(future);
+  }
+
+  void addFuture(ToastFuture future) {
+    toastSet.add(future);
+  }
+}
+
+/// use the method to dismiss all toast.
+void dismissAllToast() {
+  ToastManager().dismissAll();
+}
diff --git a/pubspec.yaml b/pubspec.yaml
index 3fcff22..2a89168 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: oktoast
 description: A pure flutter toast library  Support custom style/widget. Easy to use. You can use this library to achieve the same effect as Android toast.
-version: 2.1.0
+version: 2.1.1
 author: Caijinglong<cjl_spy@163.com>
 homepage: https://github.com/OpenFlutter/flutter_oktoast
 email: cjl_spy@163.com