diff --git a/src/dialog/index.js b/src/dialog/index.js
index 59cb3dca8..b51d4f90e 100644
--- a/src/dialog/index.js
+++ b/src/dialog/index.js
@@ -1,4 +1,3 @@
-import { nextTick } from 'vue';
 import { inBrowser } from '../utils';
 import { mountComponent, usePopupState } from '../utils/mount-component';
 import VanDialog from './Dialog';
@@ -35,17 +34,13 @@ function Dialog(options) {
       initInstance();
     }
 
-    instance.setState({
+    instance.open({
       ...Dialog.currentOptions,
       ...options,
       callback: (action) => {
         (action === 'confirm' ? resolve : reject)(action);
       },
     });
-
-    nextTick(() => {
-      instance.toggle(true);
-    });
   });
 }
 
diff --git a/src/image-preview/index.js b/src/image-preview/index.js
index 61e6a88ef..b4e3fb9d8 100644
--- a/src/image-preview/index.js
+++ b/src/image-preview/index.js
@@ -1,4 +1,3 @@
-import { nextTick } from 'vue';
 import { inBrowser } from '../utils';
 import { mountComponent, usePopupState } from '../utils/mount-component';
 import VanImagePreview from './ImagePreview';
@@ -60,15 +59,11 @@ const ImagePreview = (images, startPosition = 0) => {
 
   const options = Array.isArray(images) ? { images, startPosition } : images;
 
-  instance.setState({
+  instance.open({
     ...defaultConfig,
     ...options,
   });
 
-  nextTick(() => {
-    instance.toggle(true);
-  });
-
   return instance;
 };
 
diff --git a/src/notify/index.js b/src/notify/index.js
index 3cb333547..2c5a80065 100644
--- a/src/notify/index.js
+++ b/src/notify/index.js
@@ -1,4 +1,3 @@
-import { nextTick } from 'vue';
 import { isObject, inBrowser } from '../utils';
 import { mountComponent, usePopupState } from '../utils/mount-component';
 import VanNotify from './Notify';
@@ -40,17 +39,13 @@ function Notify(options) {
     ...parseOptions(options),
   };
 
-  instance.setState(options);
+  instance.open(options);
   clearTimeout(timer);
 
   if (options.duration && options.duration > 0) {
     timer = setTimeout(Notify.clear, options.duration);
   }
 
-  nextTick(() => {
-    instance.toggle(true);
-  });
-
   return instance;
 }
 
diff --git a/src/toast/Toast.js b/src/toast/Toast.js
index 72f18edeb..5304d6bcf 100644
--- a/src/toast/Toast.js
+++ b/src/toast/Toast.js
@@ -16,6 +16,7 @@ export default createComponent({
     icon: String,
     show: Boolean,
     message: [Number, String],
+    duration: Number,
     className: null,
     iconPrefix: String,
     lockScroll: Boolean,
@@ -39,6 +40,7 @@ export default createComponent({
   emits: ['update:show'],
 
   setup(props, { emit }) {
+    let timer;
     let clickable;
 
     const toggleClickable = () => {
@@ -55,6 +57,10 @@ export default createComponent({
       }
     };
 
+    const clearTimer = () => {
+      clearTimeout(timer);
+    };
+
     const renderIcon = () => {
       const { icon, type, iconPrefix, loadingType } = props;
       const hasIcon = icon || type === 'success' || type === 'fail';
@@ -88,6 +94,18 @@ export default createComponent({
 
     watch([() => props.show, () => props.forbidClick], toggleClickable);
 
+    watch(
+      () => props.show,
+      (value) => {
+        clearTimer();
+        if (value && props.duration > 0) {
+          timer = setTimeout(() => {
+            emit('update:show', false);
+          }, props.duration);
+        }
+      }
+    );
+
     onMounted(toggleClickable);
     onUnmounted(toggleClickable);
 
@@ -100,6 +118,7 @@ export default createComponent({
         ]}
         transition={props.transition}
         onClick={onClick}
+        onClosed={clearTimer}
       >
         {renderIcon()}
         {renderMessage()}
diff --git a/src/toast/index.js b/src/toast/index.js
index 6515b04ba..7f4f4a9c3 100644
--- a/src/toast/index.js
+++ b/src/toast/index.js
@@ -1,4 +1,4 @@
-import { ref, watch, nextTick } from 'vue';
+import { ref, watch } from 'vue';
 import { isObject, inBrowser } from '../utils';
 import { mountComponent, usePopupState } from '../utils/mount-component';
 import VanToast from './Toast';
@@ -25,7 +25,6 @@ const defaultOptions = {
 
 // default options of specific type
 let defaultOptionsMap = {};
-
 let queue = [];
 let allowMultiple = false;
 let currentOptions = {
@@ -43,24 +42,14 @@ function createInstance() {
   const { instance, unmount } = mountComponent({
     setup() {
       const message = ref();
-      const { state, toggle } = usePopupState();
+      const { open, state, toggle } = usePopupState();
 
       const clear = () => {
         toggle(false);
       };
 
-      let timer;
-      const show = (duration) => {
-        toggle(true);
-        clearTimeout(timer);
-        if (duration > 0) {
-          timer = setTimeout(clear, duration);
-        }
-      };
-
       const onClosed = () => {
         if (allowMultiple) {
-          clearTimeout(timer);
           queue = queue.filter((item) => item !== instance);
           unmount();
         }
@@ -71,7 +60,7 @@ function createInstance() {
       });
 
       return {
-        show,
+        open,
         clear,
         state,
         toggle,
@@ -112,11 +101,6 @@ function getInstance() {
 function Toast(options = {}) {
   const toast = getInstance();
 
-  // should add z-index if previous toast has not disappeared
-  if (toast.value) {
-    toast.updateZIndex();
-  }
-
   options = parseOptions(options);
   options = {
     ...currentOptions,
@@ -124,14 +108,7 @@ function Toast(options = {}) {
     ...options,
   };
 
-  toast.setState({
-    ...options,
-    duration: undefined,
-  });
-
-  nextTick(() => {
-    toast.show(options.duration);
-  });
+  toast.open(options);
 
   return toast;
 }
diff --git a/src/utils/mount-component.ts b/src/utils/mount-component.ts
index 5c20326ab..bdbf7c9be 100644
--- a/src/utils/mount-component.ts
+++ b/src/utils/mount-component.ts
@@ -1,4 +1,4 @@
-import { createApp, reactive, Component } from 'vue';
+import { createApp, reactive, Component, nextTick } from 'vue';
 import { usePublicApi } from '../composition/use-public-api';
 
 export function usePopupState() {
@@ -10,17 +10,22 @@ export function usePopupState() {
     state.show = show;
   };
 
+  const open = (props: Record<string, any>) => {
+    Object.assign(state, props);
+
+    nextTick(() => {
+      toggle(true);
+    });
+  };
+
   const close = () => {
     toggle(false);
   };
 
-  const setState = (props: Record<string, any>) => {
-    Object.assign(state, props);
-  };
-
-  usePublicApi({ close, toggle, setState });
+  usePublicApi({ open, close, toggle });
 
   return {
+    open,
     state,
     toggle,
   };