diff --git a/Example/Example/ViewController.swift b/Example/Example/ViewController.swift
index e81bcd5..85a9b7f 100644
--- a/Example/Example/ViewController.swift
+++ b/Example/Example/ViewController.swift
@@ -33,8 +33,8 @@ class ViewController: UIViewController {
         
         
 //        testUpdateAction()
-        testGuard()
-        
+//        testGuard()
+        fastGuard()
     }
     
     func testDelete() {
@@ -100,6 +100,13 @@ class ViewController: UIViewController {
         
         
         
+    }
+    
+    func fastGuard() {
+        ProHUD.push(guard: self, title: "测试", message: "测试测试").add(action: .cancel, title: "OK", action: {
+            
+        })
+        
     }
     
     override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
diff --git a/ProHUD/Alert/AlertController.swift b/ProHUD/Alert/AlertController.swift
index 13aa7c6..9077194 100644
--- a/ProHUD/Alert/AlertController.swift
+++ b/ProHUD/Alert/AlertController.swift
@@ -93,6 +93,7 @@ public extension ProHUD.Alert {
     
     /// 弹出屏幕
     func pop() {
+        let hud = ProHUD.shared
         let window = hud.getAlertWindow(self)
         hud.removeItemFromArray(alert: self)
         UIView.animateForAlertBuildOut(animations: {
@@ -260,19 +261,19 @@ public extension ProHUD {
     
     /// 获取指定的实例
     /// - Parameter identifier: 指定实例的标识
-    func alerts(identifier: String?) -> [Alert] {
+    func alert(_ identifier: String?) -> Alert? {
         var aa = [Alert]()
         for a in alerts {
             if a.identifier == identifier {
                 aa.append(a)
             }
         }
-        return aa
+        return aa.last
     }
     
     /// 弹出屏幕
     /// - Parameter alert: 实例
-    func pop(alert: Alert) {
+    func pop(_ alert: Alert) {
         for a in alerts {
             if a == alert {
                 a.pop()
@@ -314,14 +315,14 @@ public extension ProHUD {
     
     /// 获取指定的实例
     /// - Parameter identifier: 指定实例的标识
-    class func alert(identifier: String?) -> [Alert] {
-        return shared.alerts(identifier: identifier)
+    class func alert(_ identifier: String?) -> Alert? {
+        return shared.alert(identifier)
     }
     
     /// 弹出屏幕
     /// - Parameter alert: 实例
-    class func pop(alert: Alert) {
-        shared.pop(alert: alert)
+    class func pop(_ alert: Alert) {
+        shared.pop(alert)
     }
     
     /// 弹出实例
diff --git a/ProHUD/Alert/AlertModel.swift b/ProHUD/Alert/AlertModel.swift
index f1dfc79..32a83d3 100644
--- a/ProHUD/Alert/AlertModel.swift
+++ b/ProHUD/Alert/AlertModel.swift
@@ -29,27 +29,6 @@ public extension ProHUD.Alert {
         /// 错误场景
         case error
         
-        public var backgroundColor: UIColor {
-            switch self {
-            case .success:
-                return UIColor.green
-            case .warning:
-                return UIColor.yellow
-            case .error:
-                return UIColor.red
-            default:
-                return .clear
-            }
-        }
-        
-        public var tintColor: UIColor {
-            switch self {
-            case .success, .error:
-                return .white
-            default:
-                return UIColor.darkGray
-            }
-        }
     }
     
     struct ViewModel {
@@ -72,7 +51,7 @@ public extension ProHUD.Alert {
         /// 持续时间
         internal var durationBlock: DispatchWorkItem?
         
-        /// 显示顶部按钮（最小化）
+        /// 强制退出按钮
         internal var forceQuitTimerBlock: DispatchWorkItem?
         
         /// 强制退出代码
diff --git a/ProHUD/Guard/GuardController.swift b/ProHUD/Guard/GuardController.swift
index 1d1b40a..c7a4394 100644
--- a/ProHUD/Guard/GuardController.swift
+++ b/ProHUD/Guard/GuardController.swift
@@ -42,8 +42,7 @@ public extension ProHUD {
         /// 是否是强制性的（点击空白处是否可以消失）
         public var force = false
         
-        private let tag = Int(23905340)
-        
+        /// 是否正在显示
         private var displaying = false
         
         // MARK: 生命周期
@@ -102,6 +101,7 @@ public extension ProHUD.Guard {
                 self.translateIn()
             }
         }
+        // FIXME: 如果传入vc为空，则push到根控制器
         
     }
     
@@ -187,6 +187,68 @@ public extension ProHUD.Guard {
     
 }
 
+// MARK: 实例函数
+
+public extension ProHUD {
+    
+    /// 推入屏幕
+    /// - Parameter alert: 实例
+    @discardableResult func push(_ guard: Guard, to viewController: UIViewController? = nil) -> Guard {
+        `guard`.push(to: viewController)
+        return `guard`
+    }
+    
+    /// 推入屏幕
+    /// - Parameter alert: 场景
+    /// - Parameter title: 标题
+    /// - Parameter message: 正文
+    /// - Parameter icon: 图标
+    @discardableResult func push(guard viewController: UIViewController? = nil, title: String? = nil, message: String? = nil) -> Guard {
+        let g = Guard(title: title, message: message)
+        g.push(to: viewController)
+        return g
+    }
+    
+    /// 弹出屏幕
+    /// - Parameter alert: 实例
+    func pop(_ guard: Guard) {
+        `guard`.pop()
+    }
+    
+}
+
+// MARK: 类函数
+
+public extension ProHUD {
+    
+    /// 推入屏幕
+    /// - Parameter alert: 实例
+    @discardableResult class func push(_ guard: Guard, to viewController: UIViewController? = nil) -> Guard {
+        return shared.push(`guard`, to: viewController)
+    }
+    
+    /// 推入屏幕
+    /// - Parameter alert: 场景
+    /// - Parameter title: 标题
+    /// - Parameter message: 正文
+    /// - Parameter icon: 图标
+    @discardableResult class func push(guard viewController: UIViewController? = nil, title: String? = nil, message: String? = nil) -> Guard {
+        return shared.push(guard: viewController, title: title, message: message)
+    }
+    
+    /// 弹出屏幕
+    /// - Parameter alert: 实例
+    class func pop(_ guard: Guard) {
+        shared.pop(`guard`)
+    }
+    
+    
+}
+
+
+
+// MARK: - 私有
+
 fileprivate extension ProHUD.Guard {
     
     /// 点击事件
diff --git a/ProHUD/HUDView.swift b/ProHUD/HUDView.swift
index 746c0a2..23e843b 100644
--- a/ProHUD/HUDView.swift
+++ b/ProHUD/HUDView.swift
@@ -35,7 +35,6 @@ public extension ProHUD {
     
     class StackContainer: UIStackView {
         
-        
         public override init(frame: CGRect) {
             super.init(frame: frame)
             spacing = cfg.alert.margin
diff --git a/ProHUD/ProHUD.swift b/ProHUD/ProHUD.swift
index bb18170..e7d5e90 100644
--- a/ProHUD/ProHUD.swift
+++ b/ProHUD/ProHUD.swift
@@ -8,8 +8,6 @@
 
 import UIKit
 
-internal let hud = ProHUD.shared
-
 public class ProHUD {
     
     public static let shared = ProHUD()
diff --git a/ProHUD/Toast/ToastController.swift b/ProHUD/Toast/ToastController.swift
index 3e506ad..a3625ee 100644
--- a/ProHUD/Toast/ToastController.swift
+++ b/ProHUD/Toast/ToastController.swift
@@ -109,7 +109,7 @@ public extension ProHUD.Toast {
     
     /// 弹出屏幕
     func pop() {
-        hud.removeItemFromArray(toast: self)
+        ProHUD.shared.removeItemFromArray(toast: self)
         UIView.animateForToast(animations: {
             let frame = self.window?.frame ?? .zero
             self.window?.transform = .init(translationX: 0, y: -200-frame.maxY)
@@ -284,19 +284,19 @@ public extension ProHUD {
     
     /// 获取指定的toast
     /// - Parameter identifier: 标识
-    func toasts(identifier: String?) -> [Toast] {
+    func toast(_ identifier: String?) -> Toast? {
         var tt = [Toast]()
         for t in toasts {
             if t.identifier == identifier {
                 tt.append(t)
             }
         }
-        return tt
+        return tt.last
     }
     
     /// Toast弹出屏幕
     /// - Parameter toast: 实例
-    func pop(toast: Toast) {
+    func pop(_ toast: Toast) {
         for t in toasts {
             if t == toast {
                 t.pop()
@@ -338,14 +338,14 @@ public extension ProHUD {
     
     /// 获取指定的toast
     /// - Parameter identifier: 标识
-    class func toast(identifier: String?) -> [Toast] {
-        return shared.toasts(identifier: identifier)
+    class func toast(_ identifier: String?) -> Toast? {
+        return shared.toast(identifier)
     }
     
     /// Toast弹出屏幕
     /// - Parameter toast: 实例
-    class func pop(toast: Toast) {
-        shared.pop(toast: toast)
+    class func pop(_ toast: Toast) {
+        shared.pop(toast)
     }
     
     /// Toast弹出屏幕