diff --git a/Example/Example/TestToastVC.swift b/Example/Example/TestToastVC.swift
index 72ff5c8..d8abb9c 100644
--- a/Example/Example/TestToastVC.swift
+++ b/Example/Example/TestToastVC.swift
@@ -89,7 +89,8 @@ class TestToastVC: BaseListVC {
             }
         } else if row == 7 {
             Toast.find("aaa", last: { (t) in
-                t.update { (vm) in
+                t.pulse()
+                t.update() { (vm) in
                     vm.title = "已经存在了"
                 }
             }) {
diff --git a/ProHUD/Alert/AlertController.swift b/ProHUD/Alert/AlertController.swift
index 73da546..5534f11 100644
--- a/ProHUD/Alert/AlertController.swift
+++ b/ProHUD/Alert/AlertController.swift
@@ -56,7 +56,7 @@ public extension ProHUD {
         public var vm = ViewModel()
         
         // MARK: 生命周期
-        internal var isLoadFinished = false
+        private var isLoadFinished = false
         
         /// 实例化
         /// - Parameter scene: 场景
@@ -180,7 +180,7 @@ public extension Alert {
         return Alert(scene: scene, title: title, message: message, actions: actions).push()
     }
     
-    /// 获取指定的实例
+    /// 查找指定的实例
     /// - Parameter identifier: 指定实例的标识
     class func find(_ identifier: String?) -> [Alert] {
         var aa = [Alert]()
diff --git a/ProHUD/Guard/GuardController.swift b/ProHUD/Guard/GuardController.swift
index f84131d..578cc2e 100644
--- a/ProHUD/Guard/GuardController.swift
+++ b/ProHUD/Guard/GuardController.swift
@@ -49,7 +49,7 @@ public extension ProHUD {
         public var isFullScreen = false
         
         /// 是否正在显示
-        private var displaying = false
+        private var isDisplaying = false
         
         /// 背景颜色
         public var backgroundColor: UIColor? = UIColor(white: 0, alpha: 0.4)
@@ -57,7 +57,7 @@ public extension ProHUD {
         public var vm = ViewModel()
         
         // MARK: 生命周期
-        internal var isLoadFinished = false
+        private var isLoadFinished = false
         
         /// 实例化
         /// - Parameter title: 标题
@@ -106,10 +106,10 @@ public extension Guard {
             view.snp.makeConstraints { (mk) in
                 mk.edges.equalToSuperview()
             }
-            if displaying == false {
+            if isDisplaying == false {
                 privTranslateOut()
             }
-            displaying = true
+            isDisplaying = true
             UIView.animateForGuard {
                 self.privTranslateIn()
             }
@@ -124,16 +124,16 @@ public extension Guard {
     
     /// 从父视图控制器弹出
     func pop() {
-        if displaying {
+        if isDisplaying {
             debug("pop")
             willDisappearCallback?()
-            displaying = false
+            isDisplaying = false
             view.isUserInteractionEnabled = false
             self.removeFromParent()
             UIView.animateForGuard(animations: {
                 self.privTranslateOut()
             }) { (done) in
-                if self.displaying == false {
+                if self.isDisplaying == false {
                     self.view.removeFromSuperview()
                 }
             }
@@ -162,7 +162,7 @@ public extension Guard {
         return Guard(actions: actions).push(to: viewController)
     }
     
-    /// 获取指定的实例
+    /// 查找指定的实例
     /// - Parameter identifier: 指定实例的标识
     class func find(_ identifier: String?, from viewController: UIViewController? = nil) -> [Guard] {
         var gg = [Guard]()
diff --git a/ProHUD/Toast/ToastController.swift b/ProHUD/Toast/ToastController.swift
index 1b71638..4c511b1 100644
--- a/ProHUD/Toast/ToastController.swift
+++ b/ProHUD/Toast/ToastController.swift
@@ -173,6 +173,8 @@ public extension Toast {
         vm.tapCallback = callback
     }
     
+    /// 图片旋转效果
+    /// - Parameter rotate: 是否开启
     func animate(rotate: Bool) {
         if rotate {
             DispatchQueue.main.async {
@@ -187,6 +189,21 @@ public extension Toast {
         }
     }
     
+    /// 脉冲效果
+    func pulse() {
+        DispatchQueue.main.async {
+            UIView.animate(withDuration: 0.2, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: [.allowUserInteraction, .curveEaseOut], animations: {
+                self.window?.transform = .init(scaleX: 1.04, y: 1.04)
+            }) { (done) in
+                UIView.animate(withDuration: 1, delay: 0, usingSpringWithDamping: 0.5, initialSpringVelocity: 1, options: [.allowUserInteraction, .curveEaseIn], animations: {
+                    self.window?.transform = .identity
+                }) { (done) in
+                    
+                }
+            }
+        }
+    }
+    
 }
 
 
@@ -202,7 +219,7 @@ public extension Toast {
         return Toast(scene: scene, title: title, message: message, duration: duration, actions: actions).push()
     }
     
-    /// 获取指定的toast
+    /// 查找指定的实例
     /// - Parameter identifier: 标识
     class func find(_ identifier: String?) -> [Toast] {
         var tt = [Toast]()