diff --git a/PHDemo/PHDemo/DemoAlertVC.swift b/PHDemo/PHDemo/DemoAlertVC.swift
index 2ab055f..e596f33 100644
--- a/PHDemo/PHDemo/DemoAlertVC.swift
+++ b/PHDemo/PHDemo/DemoAlertVC.swift
@@ -47,9 +47,9 @@ class DemoAlertVC: ListVC {
             section.add(title: "图标 + 文字") {
                 Alert(.loading.message("正在加载")) { alert in
                     updateProgress(in: 4) { percent in
-                        alert.update(progress: percent)
+                        alert.vm?.progress(percent)
                     } completion: {
-                        alert.update { alert in
+                        alert.reloadData { alert in
                             alert.vm = .success.message("加载成功")
                             alert.add(action: "OK")
                         }
diff --git a/PHDemo/PHDemo/DemoCapsuleVC.swift b/PHDemo/PHDemo/DemoCapsuleVC.swift
index b3511aa..0a5e870 100644
--- a/PHDemo/PHDemo/DemoCapsuleVC.swift
+++ b/PHDemo/PHDemo/DemoCapsuleVC.swift
@@ -59,14 +59,33 @@ class DemoCapsuleVC: ListVC {
             section.add(title: "下载进度") {
                 let capsule = CapsuleTarget()
                 capsule.vm = .loading(.infinity).message("正在下载")
-                capsule.update(progress: 0)
                 capsule.push()
                 updateProgress(in: 4) { percent in
-                    capsule.update(progress: percent)
+                    capsule.vm?.progress(percent)
                 } completion: {
-                    capsule.update { toast in
-                        toast.vm = .success(5).message("下载成功")
-                    }
+                    capsule.vm(.success(5).message("下载成功"))
+                }
+            }
+            section.add(title: "倒计时3s") {
+                Capsule(.icon(.init(named: "twemoji")).title("倒计时3s").duration(4)) { capsule in
+                    capsule.config.cardMinWidth = 140 // 估算一下合适的宽度并固定，不然数字变化时总宽度也在一直变化，观感不佳
+                    capsule.vm?.countdown(seconds: 3, onUpdate: { progress in
+                        capsule.title = .init(format: "倒计时%.1fs", progress.current)
+                    }, onCompletion: {
+                        // 重新创建一个新的vm
+                        capsule.vm(.success(3).title("倒计时结束"))
+                    })
+                }
+            }
+            section.add(title: "倒计时10s") {
+                Capsule(.icon(.init(named: "twemoji")).title("倒计时3s").duration(10)) { capsule in
+                    capsule.config.cardMinWidth = 140 // 估算一下合适的宽度并固定，不然数字变化时总宽度也在一直变化，观感不佳
+                    capsule.vm?.countdown(seconds: 10, onUpdate: { progress in
+                        capsule.title = .init(format: "倒计时%.1fs", progress.current)
+                    }, onCompletion: {
+                        // 重新创建一个新的vm
+                        capsule.vm(.success(3).title("倒计时结束"))
+                    })
                 }
             }
             section.add(title: "接口报错提示") {
@@ -283,7 +302,7 @@ class GradientCapsule: HUDProviderType {
     ///   - initializer: 初始化代码
     @discardableResult public convenience init(_ vm: ViewModel, initializer: ((_ capsule: Target) -> Void)?) {
         if let id = vm.identifier, id.count > 0, let target = CapsuleManager.find(identifier: id).last as? Target {
-            target.update { capsule in
+            target.reloadData { capsule in
                 capsule.vm = vm
                 initializer?(capsule as! GradientCapsule.Target)
             }
diff --git a/PHDemo/PHDemo/DemoToastVC.swift b/PHDemo/PHDemo/DemoToastVC.swift
index fc5eeea..7e2cfec 100644
--- a/PHDemo/PHDemo/DemoToastVC.swift
+++ b/PHDemo/PHDemo/DemoToastVC.swift
@@ -128,25 +128,23 @@ class DemoToastVC: ListVC {
                 let s2 = "这通常不会太久"
                 let toast = ToastTarget(.loading.title(s1).message(s2))
                 toast.push()
-                toast.update(progress: 0)
                 updateProgress(in: 4) { percent in
-                    toast.update(progress: percent)
+                    toast.vm?.progress(percent)
                 } completion: {
-                    toast.update { toast in
-                        toast.vm = .success(5)
-                            .title("加载成功")
-                            .message("这条通知5s后消失")
-                            .icon(.init(named: "twemoji"))
-                    }
+                    toast.vm(
+                        .success(5)
+                        .title("加载成功")
+                        .message("这条通知5s后消失")
+                        .icon(.init(named: "twemoji"))
+                    )
                 }
             }
             section.add(title: "倒计时") {
                 let s1 = "笑容正在消失"
                 let s2 = "这通常不会太久"
-                Toast { toast in
-                    toast.vm = .title(s1).message(s2).icon(UIImage(named: "twemoji"))
+                Toast(.title(s1).message(s2).icon(UIImage(named: "twemoji"))) { toast in
                     updateProgress(in: 5) { percent in
-                        toast.update(progress: 1 - percent)
+                        toast.vm?.progress(1 - percent)
                     } completion: {
                         toast.pop()
                     }
diff --git a/Sources/ProHUD/Alert/AlertDefaultLayout.swift b/Sources/ProHUD/Alert/AlertDefaultLayout.swift
index cb38768..28cf8bf 100644
--- a/Sources/ProHUD/Alert/AlertDefaultLayout.swift
+++ b/Sources/ProHUD/Alert/AlertDefaultLayout.swift
@@ -131,13 +131,6 @@ extension AlertTarget: DefaultLayout {
 extension AlertTarget {
     
     func setupImageView() {
-        // 移除动画
-        stopRotate(animateLayer)
-        animateLayer = nil
-        animation = nil
-        
-        // 移除进度
-        progressView?.removeFromSuperview()
         
         if vm?.icon != nil || vm?.iconURL != nil {
             imageView.image = vm?.icon
@@ -154,9 +147,6 @@ extension AlertTarget {
                     mk.height.equalTo(config.iconSizeByDefault.height)
                 }
             }
-            if let rotation = vm?.rotation {
-                startRotate(rotation)
-            }
         } else {
             if contentStack.arrangedSubviews.contains(imageView) {
                 contentStack.removeArrangedSubview(imageView)
@@ -164,6 +154,9 @@ extension AlertTarget {
             imageView.removeFromSuperview()
         }
         
+        vm?.updateRotation()
+        vm?.updateProgress()
+        
     }
     func setupTextStack() {
         let titleCount = vm?.title?.count ?? 0
diff --git a/Sources/ProHUD/Alert/AlertManager.swift b/Sources/ProHUD/Alert/AlertManager.swift
index 30b60c2..40649c2 100644
--- a/Sources/ProHUD/Alert/AlertManager.swift
+++ b/Sources/ProHUD/Alert/AlertManager.swift
@@ -65,14 +65,26 @@ extension AlertTarget {
         }
     }
     
-    /// 更新HUD实例
-    /// - Parameter callback: 实例更新代码
-    @objc open func update(handler: @escaping (_ alert: AlertTarget) -> Void) {
+    /// 更新VC
+    /// - Parameter handler: 更新操作
+    @objc open func reloadData(handler: @escaping (_ capsule: AlertTarget) -> Void) {
         handler(self)
         reloadData()
-        UIView.animateEaseOut(duration: config.animateDurationForReloadByDefault) {
-            self.view.layoutIfNeeded()
-        }
+    }
+    
+    /// 更新vm并刷新UI
+    /// - Parameter handler: 更新操作
+    @objc open func vm(handler: @escaping (_ vm: ViewModel) -> ViewModel) {
+        let new = handler(vm ?? .init())
+        vm?.update(another: new)
+        reloadData()
+    }
+    
+    /// 重设vm并刷新UI
+    /// - Parameter vm: 新的vm
+    @objc open func vm(_ vm: ViewModel) {
+        self.vm = vm
+        reloadData()
     }
     
     func updateTimeoutDuration() {
@@ -133,7 +145,7 @@ public class AlertManager: NSObject {
     @discardableResult public static func find(identifier: String, update handler: ((_ alert: AlertTarget) -> Void)? = nil) -> [AlertTarget] {
         let arr = AppContext.alertWindow.values.flatMap({ $0.alerts }).filter({ $0.identifier == identifier })
         if let handler = handler {
-            arr.forEach({ $0.update(handler: handler) })
+            arr.forEach({ $0.reloadData(handler: handler) })
         }
         return arr
     }
diff --git a/Sources/ProHUD/Alert/AlertProvider.swift b/Sources/ProHUD/Alert/AlertProvider.swift
index 04ca4fb..9d74123 100644
--- a/Sources/ProHUD/Alert/AlertProvider.swift
+++ b/Sources/ProHUD/Alert/AlertProvider.swift
@@ -14,7 +14,7 @@ open class AlertProvider: HUDProviderType {
     
     /// 根据自定义的初始化代码创建一个Target并显示
     /// - Parameter initializer: 初始化代码（传空值时不会做任何事）
-    @discardableResult public required init(initializer: ((_ target: Target) -> Void)?) {
+    @discardableResult public required init(initializer: ((_ alert: Target) -> Void)?) {
         guard let initializer = initializer else {
             // Provider的作用就是push一个target
             // 如果没有任何初始化代码就没有target，就是个无意义的Provider
@@ -33,7 +33,7 @@ open class AlertProvider: HUDProviderType {
     ///   - initializer: 自定义的初始化代码
     @discardableResult public convenience init(_ vm: ViewModel, initializer: ((_ alert: Target) -> Void)?) {
         if let id = vm.identifier, id.count > 0, let target = AlertManager.find(identifier: id).last {
-            target.update { t in
+            target.reloadData { t in
                 t.vm = vm
                 initializer?(t)
             }
diff --git a/Sources/ProHUD/Alert/AlertTarget.swift b/Sources/ProHUD/Alert/AlertTarget.swift
index eb7b3b8..ff6335e 100644
--- a/Sources/ProHUD/Alert/AlertTarget.swift
+++ b/Sources/ProHUD/Alert/AlertTarget.swift
@@ -82,6 +82,7 @@ open class AlertTarget: BaseController, HUDTargetType {
         didSet {
             if let vm = vm {
                 vm.title = title
+                titleLabel.text = title
             } else {
                 vm = .title(title)
             }
diff --git a/Sources/ProHUD/Capsule/CapsuleConfiguration.swift b/Sources/ProHUD/Capsule/CapsuleConfiguration.swift
index 8b4e162..f41f461 100644
--- a/Sources/ProHUD/Capsule/CapsuleConfiguration.swift
+++ b/Sources/ProHUD/Capsule/CapsuleConfiguration.swift
@@ -31,6 +31,9 @@ public class CapsuleConfiguration: CommonConfiguration {
     
     override var cardMaxHeightByDefault: CGFloat { cardMaxHeight ?? 120 }
     
+    /// 最小宽度(当设置了最小宽度而内容没有达到时，内容布局默认靠左)
+    public var cardMinWidth: CGFloat? = nil
+    
     /// 最小高度
     public var cardMinHeight = CGFloat(40)
     
diff --git a/Sources/ProHUD/Capsule/CapsuleDefaultLayout.swift b/Sources/ProHUD/Capsule/CapsuleDefaultLayout.swift
index 0811d15..2d9afe0 100644
--- a/Sources/ProHUD/Capsule/CapsuleDefaultLayout.swift
+++ b/Sources/ProHUD/Capsule/CapsuleDefaultLayout.swift
@@ -74,20 +74,18 @@ extension CapsuleTarget: DefaultLayout {
         if contentStack.superview == nil {
             view.addSubview(contentStack)
             contentStack.snp.remakeConstraints { make in
-                make.center.equalToSuperview()
+                make.centerY.equalToSuperview()
+                if config.cardMinWidth != nil {
+                    make.left.greaterThanOrEqualToSuperview().inset(config.cardEdgeInsetsByDefault.left)
+                } else {
+                    make.centerX.equalToSuperview()
+                }
             }
         }
         
     }
     
     private func setupImageView() {
-        // 移除动画
-        stopRotate(animateLayer)
-        animateLayer = nil
-        animation = nil
-        
-        // 移除进度
-        progressView?.removeFromSuperview()
         
         if vm?.icon == nil && vm?.iconURL == nil {
             contentStack.removeArrangedSubview(imageView)
@@ -106,9 +104,9 @@ extension CapsuleTarget: DefaultLayout {
         if let iconURL = vm?.iconURL {
             config.customWebImage?(imageView, iconURL)
         }
-        if let rotation = vm?.rotation {
-            startRotate(rotation)
-        }
+        
+        vm?.updateRotation()
+        vm?.updateProgress()
         
     }
     
@@ -118,7 +116,7 @@ extension CapsuleTarget: DefaultLayout {
         var size = contentStack.frame.size
         let width = min(config.cardMaxWidthByDefault, size.width + cardEdgeInsetsByDefault.left + cardEdgeInsetsByDefault.right)
         let height = min(config.cardMaxHeightByDefault, size.height + cardEdgeInsetsByDefault.top + cardEdgeInsetsByDefault.bottom)
-        return .init(width: width, height: max(height, config.cardMinHeight))
+        return .init(width: max(width, config.cardMinWidth ?? 0), height: max(height, config.cardMinHeight))
     }
     
     func getWindowFrame(size: CGSize) -> CGRect {
diff --git a/Sources/ProHUD/Capsule/CapsuleManager.swift b/Sources/ProHUD/Capsule/CapsuleManager.swift
index 80e5900..17ab8b3 100644
--- a/Sources/ProHUD/Capsule/CapsuleManager.swift
+++ b/Sources/ProHUD/Capsule/CapsuleManager.swift
@@ -172,15 +172,26 @@ extension CapsuleTarget {
         }
     }
     
-    /// 更新HUD实例
-    /// - Parameter handler: 实例更新代码
-    @objc open func update(handler: @escaping (_ capsule: CapsuleTarget) -> Void) {
+    /// 更新VC
+    /// - Parameter handler: 更新操作
+    @objc open func reloadData(handler: @escaping (_ capsule: CapsuleTarget) -> Void) {
         handler(self)
-        
         reloadData()
-        UIView.animateEaseOut(duration: config.animateDurationForReloadByDefault) {
-            self.view.layoutIfNeeded()
-        }
+    }
+    
+    /// 更新vm并刷新UI
+    /// - Parameter handler: 更新操作
+    @objc open func vm(handler: @escaping (_ vm: ViewModel) -> ViewModel) {
+        let new = handler(vm ?? .init())
+        vm?.update(another: new)
+        reloadData()
+    }
+    
+    /// 重设vm并刷新UI
+    /// - Parameter vm: 新的vm
+    @objc open func vm(_ vm: ViewModel) {
+        self.vm = vm
+        reloadData()
     }
     
     func updateTimeoutDuration() {
@@ -204,7 +215,22 @@ public class CapsuleManager: NSObject {
         let allCapsules = allPositions.compactMap({ $0.capsule })
         let arr = (allCapsules + AppContext.capsuleInQueue).filter({ $0.identifier == identifier || $0.vm?.identifier == identifier })
         if let handler = handler {
-            arr.forEach({ $0.update(handler: handler) })
+            arr.forEach({ $0.reloadData(handler: handler) })
+        }
+        return arr
+    }
+    
+    /// 查找HUD实例
+    /// - Parameters:
+    ///   - position: 位置
+    ///   - handler: 更新
+    /// - Returns: HUD实例
+    @discardableResult public static func find(position: CapsuleViewModel.Position, update handler: ((_ capsule: CapsuleTarget) -> Void)? = nil) -> [CapsuleTarget] {
+        let allPositions = AppContext.capsuleWindows.values.flatMap({ $0.values })
+        let allCapsules = allPositions.compactMap({ $0.capsule })
+        let arr = (allCapsules + AppContext.capsuleInQueue).filter({ $0.vm?.position == position })
+        if let handler = handler {
+            arr.forEach({ $0.reloadData(handler: handler) })
         }
         return arr
     }
diff --git a/Sources/ProHUD/Capsule/CapsuleProvider.swift b/Sources/ProHUD/Capsule/CapsuleProvider.swift
index 10ae9f3..523c4b9 100644
--- a/Sources/ProHUD/Capsule/CapsuleProvider.swift
+++ b/Sources/ProHUD/Capsule/CapsuleProvider.swift
@@ -14,7 +14,7 @@ open class CapsuleProvider: HUDProviderType {
     
     /// 根据自定义的初始化代码创建一个Target并显示
     /// - Parameter initializer: 初始化代码（传空值时不会做任何事）
-    @discardableResult public required init(initializer: ((_ target: Target) -> Void)?) {
+    @discardableResult public required init(initializer: ((_ capsule: Target) -> Void)?) {
         guard let initializer = initializer else {
             // Provider的作用就是push一个target
             // 如果没有任何初始化代码就没有target，就是个无意义的Provider
@@ -33,7 +33,7 @@ open class CapsuleProvider: HUDProviderType {
     ///   - initializer: 初始化代码
     @discardableResult public convenience init(_ vm: ViewModel, initializer: ((_ capsule: Target) -> Void)?) {
         if let id = vm.identifier, id.count > 0, let target = CapsuleManager.find(identifier: id).last {
-            target.update { t in
+            target.reloadData { t in
                 t.vm = vm
                 initializer?(t)
             }
diff --git a/Sources/ProHUD/Capsule/CapsuleTarget.swift b/Sources/ProHUD/Capsule/CapsuleTarget.swift
index 7dfde5e..a1463ca 100644
--- a/Sources/ProHUD/Capsule/CapsuleTarget.swift
+++ b/Sources/ProHUD/Capsule/CapsuleTarget.swift
@@ -55,6 +55,7 @@ open class CapsuleTarget: BaseController, HUDTargetType {
         didSet {
             if let vm = vm {
                 vm.title = title
+                textLabel.text = title
             } else {
                 vm = .title(title)
             }
diff --git a/Sources/ProHUD/Core/Models/BaseViewModel.swift b/Sources/ProHUD/Core/Models/BaseViewModel.swift
index fe4ab77..dacda60 100644
--- a/Sources/ProHUD/Core/Models/BaseViewModel.swift
+++ b/Sources/ProHUD/Core/Models/BaseViewModel.swift
@@ -50,6 +50,13 @@ open class BaseViewModel: NSObject, HUDViewModelType {
     /// 持续时间（为空代表根据场景不同的默认配置，为0代表无穷大）
     open var duration: TimeInterval?
     
+    /// 进度条，大于0时显示，取值区间: 0~1
+    @objc open var progress: TimeProgress? {
+        didSet {
+            updateProgress()
+        }
+    }
+    
     weak var vc: BaseController? {
         didSet {
             if let id = tmpStoredIdentifier {
@@ -96,6 +103,108 @@ open class BaseViewModel: NSObject, HUDViewModelType {
         timeoutTimer = nil
     }
     
+    @objc open func update(another vm: BaseViewModel) {
+        self.title(vm.title)
+            .message(vm.message)
+            .icon(vm.icon)
+            .icon(vm.iconURL)
+            .duration(vm.duration)
+            .rotation(vm.rotation)
+            .tintColor(vm.tintColor)
+            .progress(vm.progress)
+    }
+    
+}
+
+extension BaseViewModel {
+    
+    // MARK: rotation
+    
+    func updateRotation() {
+        guard let vc = vc as? LoadingAnimation else { return }
+        DispatchQueue.main.async {
+            if let rotation = self.rotation {
+                vc.startRotate(rotation)
+            } else {
+                vc.stopRotate(vc.animateLayer)
+                vc.animateLayer = nil
+                vc.animation = nil
+            }
+        }
+    }
+    
+    // MARK: progress
+    
+    @discardableResult
+    public func progress(_ progress: TimeProgress?) -> Self {
+        self.progress = progress
+        return self
+    }
+    
+    @discardableResult
+    public func progress(_ newPercent: CGFloat) -> Self {
+        if progress == nil {
+            let p: TimeProgress = .init(total: 1)
+            p.set(newPercent: newPercent)
+            self.progress = p
+        } else {
+            self.progress?.set(newPercent: newPercent)
+            self.updateProgress()
+        }
+        return self
+    }
+    
+    func updateProgress() {
+        guard let vc = vc as? LoadingAnimation else { return }
+        guard let superview = vc.imageView.superview else { return }
+        DispatchQueue.main.async {
+            if let progress = self.progress, progress.percent > 0 {
+                if vc.progressView == nil {
+                    let width = vc.imageView.frame.size.width + ProgressView.lineWidth * 2
+                    let v = ProgressView(frame: .init(origin: .zero, size: .init(width: width, height: width)))
+                    superview.addSubview(v)
+                    v.tintColor = superview.tintColor
+                    v.snp.remakeConstraints { (mk) in
+                        mk.center.equalTo(vc.imageView)
+                        mk.width.height.equalTo(width)
+                    }
+                    vc.progressView = v
+                }
+            } else {
+                vc.progressView?.removeFromSuperview()
+                vc.progressView = nil
+            }
+            if let v = vc.progressView, let progress = self.progress {
+                v.progress = progress.percent
+            }
+        }
+    }
+    
+    // MARK: countdown
+    
+    public func countdown(seconds: TimeInterval, onUpdate: ((_ progress: TimeProgress) -> Void)?, onCompletion: (() -> Void)?) {
+        guard let vc = vc as? LoadingAnimation else { return }
+        guard seconds > 0 else {
+            // stop countdown
+            self.progress = nil
+            return
+        }
+        let progress: TimeProgress = .init(total: seconds, direction: .counterclockwise, onUpdate: onUpdate, onCompletion: onCompletion)
+        self.progress = progress
+        countdownLoop(after: progress.interval)
+    }
+    
+    func countdownLoop(after: TimeInterval) {
+        DispatchQueue.main.asyncAfter(deadline: .now() + after) {
+            if let p = self.progress, p.isFinish == false {
+                self.progress?.next()
+                self.updateProgress()
+                self.countdownLoop(after: p.interval)
+            }
+        }
+        
+    }
+    
 }
 
 // MARK: - convenience func
diff --git a/Sources/ProHUD/Core/Models/Rotation.swift b/Sources/ProHUD/Core/Models/Rotation.swift
index 9ede3c9..a938173 100644
--- a/Sources/ProHUD/Core/Models/Rotation.swift
+++ b/Sources/ProHUD/Core/Models/Rotation.swift
@@ -10,20 +10,13 @@ import Foundation
 public struct Rotation {
     
     /// 旋转方向
-    public enum Direction: Double {
-        /// 顺时针
-        case clockwise = 1
-        /// 逆时针
-        case counterclockwise = -1
-    }
-    
-    public var direction: Direction = .clockwise
+    public var direction: TimeDirection = .clockwise
     
     public var speed: CFTimeInterval = 2
     
     public var repeatCount: Float = .infinity
     
-    public init(direction: Direction = .clockwise, speed: CFTimeInterval = 2, repeatCount: Float = .infinity) {
+    public init(direction: TimeDirection = .clockwise, speed: CFTimeInterval = 2, repeatCount: Float = .infinity) {
         self.direction = direction
         self.speed = speed
         self.repeatCount = repeatCount
diff --git a/Sources/ProHUD/Core/Models/TimeDirection.swift b/Sources/ProHUD/Core/Models/TimeDirection.swift
new file mode 100644
index 0000000..d547179
--- /dev/null
+++ b/Sources/ProHUD/Core/Models/TimeDirection.swift
@@ -0,0 +1,15 @@
+//
+//  TimeDirection.swift
+//  
+//
+//  Created by xaoxuu on 2023/8/25.
+//
+
+import Foundation
+
+public enum TimeDirection: Double {
+    /// 顺时针
+    case clockwise = 1
+    /// 逆时针
+    case counterclockwise = -1
+}
diff --git a/Sources/ProHUD/Core/Models/TimeProgress.swift b/Sources/ProHUD/Core/Models/TimeProgress.swift
new file mode 100644
index 0000000..392a98a
--- /dev/null
+++ b/Sources/ProHUD/Core/Models/TimeProgress.swift
@@ -0,0 +1,70 @@
+//
+//  TimeProgress.swift
+//  
+//
+//  Created by xaoxuu on 2023/8/25.
+//
+
+import UIKit
+
+public class TimeProgress: NSObject {
+
+    public var total: TimeInterval
+    
+    public var current: TimeInterval
+    
+    // 每秒10跳
+    var interval: TimeInterval = 0.1
+    
+    public var direction: TimeDirection
+    
+    public var percent: CGFloat {
+        guard total > 0 else { return 0 }
+        return current / total
+    }
+    
+    public var isFinish: Bool {
+        switch direction {
+        case .clockwise:
+            return current >= total
+        case .counterclockwise:
+            return current <= 0
+        }
+    }
+    
+    init(total: TimeInterval, direction: TimeDirection = .clockwise, onUpdate: ((_ progress: TimeProgress) -> Void)? = nil, onCompletion: (() -> Void)? = nil) {
+        self.total = total
+        self.direction = direction
+        switch direction {
+        case .clockwise:
+            // 顺时针从0开始
+            self.current = 0
+        case .counterclockwise:
+            // 逆时针（倒计时）从total开始
+            self.current = total
+        }
+        self.onUpdate = onUpdate
+        self.onCompletion = onCompletion
+    }
+    
+    func next() {
+        switch direction {
+        case .clockwise:
+            current = min(total, current + interval)
+        case .counterclockwise:
+            current = max(0, current - interval)
+        }
+        onUpdate?(self)
+        if isFinish {
+            onCompletion?()
+        }
+    }
+    
+    func set(newPercent: CGFloat) {
+        current = total * newPercent
+    }
+    
+    var onUpdate: ((_ progress: TimeProgress) -> Void)?
+    var onCompletion: (() -> Void)?
+    
+}
diff --git a/Sources/ProHUD/Core/Protocols/LoadingAnimation.swift b/Sources/ProHUD/Core/Protocols/LoadingAnimation.swift
index 2d0575e..7e6ad8b 100644
--- a/Sources/ProHUD/Core/Protocols/LoadingAnimation.swift
+++ b/Sources/ProHUD/Core/Protocols/LoadingAnimation.swift
@@ -13,8 +13,4 @@ public protocol LoadingAnimation: BaseController {
     var imageView: UIImageView { get }
     var progressView: ProgressView? { get set }
     
-    /// 更新进度
-    /// - Parameter progress: 进度百分比（0～1）
-    func update(progress: CGFloat)
-    
 }
diff --git a/Sources/ProHUD/Core/Utils/RotateAnimation.swift b/Sources/ProHUD/Core/Utils/RotateAnimation.swift
index 7ed636d..d5dc197 100644
--- a/Sources/ProHUD/Core/Utils/RotateAnimation.swift
+++ b/Sources/ProHUD/Core/Utils/RotateAnimation.swift
@@ -9,27 +9,6 @@ import UIKit
 
 extension LoadingAnimation {
     
-    /// 更新进度（如果需要显示进度，需要先调用一次 updateProgress(0) 来初始化）
-    /// - Parameter progress: 进度（0~1）
-    public func update(progress: CGFloat) {
-        guard isViewAppeared else { return }
-        guard let superview = imageView.superview else { return }
-        if progressView == nil {
-            let width = imageView.frame.size.width + ProgressView.lineWidth * 2
-            let v = ProgressView(frame: .init(origin: .zero, size: .init(width: width, height: width)))
-            superview.addSubview(v)
-            v.tintColor = superview.tintColor
-            v.snp.remakeConstraints { (mk) in
-                mk.center.equalTo(imageView)
-                mk.width.height.equalTo(width)
-            }
-            progressView = v
-        }
-        if let v = progressView {
-            v.updateProgress(progress: progress)
-        }
-    }
-    
     /// 旋转动画
     /// - Parameters:
     ///   - layer: 图层
diff --git a/Sources/ProHUD/Core/Views/ProgressView.swift b/Sources/ProHUD/Core/Views/ProgressView.swift
index d1f5238..62c653b 100644
--- a/Sources/ProHUD/Core/Views/ProgressView.swift
+++ b/Sources/ProHUD/Core/Views/ProgressView.swift
@@ -10,6 +10,12 @@ import UIKit
 /// 进度指示器
 public class ProgressView: UIView {
     
+    var progress: CGFloat = 0 {
+        didSet {
+            updateProgress()
+        }
+    }
+    
     var progressLayer = CAShapeLayer()
     
     static var lineWidth: CGFloat { 4 }
@@ -57,12 +63,16 @@ public class ProgressView: UIView {
         fatalError("init(coder:) has not been implemented")
     }
     
-    func updateProgress(progress: CGFloat) {
-        if progressLayer.superlayer == nil {
-            progressLayer.strokeEnd = 0
-            layer.addSublayer(progressLayer)
+    func updateProgress() {
+        if progress > 0 {
+            if progressLayer.superlayer == nil {
+                progressLayer.strokeEnd = 0
+                layer.addSublayer(progressLayer)
+            }
+            progressLayer.strokeEnd = max(min(progress, 1), 0)
+        } else {
+            progressLayer.removeFromSuperlayer()
         }
-        progressLayer.strokeEnd = max(min(progress, 1), 0)
     }
     
 }
diff --git a/Sources/ProHUD/Toast/ToastDefaultLayout.swift b/Sources/ProHUD/Toast/ToastDefaultLayout.swift
index 5b331cf..fe3dcc3 100644
--- a/Sources/ProHUD/Toast/ToastDefaultLayout.swift
+++ b/Sources/ProHUD/Toast/ToastDefaultLayout.swift
@@ -138,21 +138,14 @@ extension ToastTarget {
     }
     
     func setupImageView() {
-        // 移除动画
-        stopRotate(animateLayer)
-        animateLayer = nil
-        animation = nil
-        
-        // 移除进度
-        progressView?.removeFromSuperview()
         
         imageView.image = vm?.icon
         if let iconURL = vm?.iconURL {
             config.customWebImage?(imageView, iconURL)
         }
-        if let rotation = vm?.rotation {
-            startRotate(rotation)
-        }
+        
+        vm?.updateRotation()
+        vm?.updateProgress()
         
     }
     
diff --git a/Sources/ProHUD/Toast/ToastManager.swift b/Sources/ProHUD/Toast/ToastManager.swift
index 4cf9e65..24bad51 100644
--- a/Sources/ProHUD/Toast/ToastManager.swift
+++ b/Sources/ProHUD/Toast/ToastManager.swift
@@ -76,14 +76,26 @@ extension ToastTarget {
         }
     }
     
-    /// 更新HUD实例
-    /// - Parameter handler: 实例更新代码
-    @objc open func update(handler: @escaping (_ toast: ToastTarget) -> Void) {
+    /// 更新VC
+    /// - Parameter handler: 更新操作
+    @objc open func reloadData(handler: @escaping (_ capsule: ToastTarget) -> Void) {
         handler(self)
         reloadData()
-        UIView.animateEaseOut(duration: config.animateDurationForReloadByDefault) {
-            self.view.layoutIfNeeded()
-        }
+    }
+    
+    /// 更新vm并刷新UI
+    /// - Parameter handler: 更新操作
+    @objc open func vm(handler: @escaping (_ vm: ViewModel) -> ViewModel) {
+        let new = handler(vm ?? .init())
+        vm?.update(another: new)
+        reloadData()
+    }
+    
+    /// 重设vm并刷新UI
+    /// - Parameter vm: 新的vm
+    @objc open func vm(_ vm: ViewModel) {
+        self.vm = vm
+        reloadData()
     }
     
     func updateTimeoutDuration() {
@@ -163,7 +175,7 @@ public class ToastManager: NSObject {
     @discardableResult public static func find(identifier: String, update handler: ((_ toast: ToastTarget) -> Void)? = nil) -> [ToastTarget] {
         let arr = AppContext.toastWindows.values.flatMap({ $0 }).compactMap({ $0.toast }).filter({ $0.identifier == identifier })
         if let handler = handler {
-            arr.forEach({ $0.update(handler: handler) })
+            arr.forEach({ $0.reloadData(handler: handler) })
         }
         return arr
     }
diff --git a/Sources/ProHUD/Toast/ToastProvider.swift b/Sources/ProHUD/Toast/ToastProvider.swift
index 0a3398c..eaf167a 100644
--- a/Sources/ProHUD/Toast/ToastProvider.swift
+++ b/Sources/ProHUD/Toast/ToastProvider.swift
@@ -14,7 +14,7 @@ open class ToastProvider: HUDProviderType {
     
     /// 根据自定义的初始化代码创建一个Target并显示
     /// - Parameter initializer: 初始化代码（传空值时不会做任何事）
-    @discardableResult public required init(initializer: ((_ target: Target) -> Void)?) {
+    @discardableResult public required init(initializer: ((_ toast: Target) -> Void)?) {
         guard let initializer = initializer else {
             // Provider的作用就是push一个target
             // 如果没有任何初始化代码就没有target，就是个无意义的Provider
@@ -33,7 +33,7 @@ open class ToastProvider: HUDProviderType {
     ///   - initializer: 自定义的初始化代码
     @discardableResult public convenience init(_ vm: ViewModel, initializer: ((_ toast: Target) -> Void)?) {
         if let id = vm.identifier, id.count > 0, let target = ToastManager.find(identifier: id).last {
-            target.update { t in
+            target.reloadData { t in
                 t.vm = vm
                 initializer?(t)
             }
diff --git a/Sources/ProHUD/Toast/ToastTarget.swift b/Sources/ProHUD/Toast/ToastTarget.swift
index 9eede2d..8417e35 100644
--- a/Sources/ProHUD/Toast/ToastTarget.swift
+++ b/Sources/ProHUD/Toast/ToastTarget.swift
@@ -94,6 +94,7 @@ open class ToastTarget: BaseController, HUDTargetType {
         didSet {
             if let vm = vm {
                 vm.title = title
+                titleLabel.text = title
             } else {
                 vm = .title(title)
             }