diff --git a/packages/vant/src/field/utils.ts b/packages/vant/src/field/utils.ts
index 14434e625..d55f97f81 100644
--- a/packages/vant/src/field/utils.ts
+++ b/packages/vant/src/field/utils.ts
@@ -1,6 +1,5 @@
 import { HTMLAttributes, InputHTMLAttributes } from 'vue';
 import {
-  trigger,
   isObject,
   isPromise,
   isFunction,
@@ -50,15 +49,14 @@ export function getRuleMessage(value: unknown, rule: FieldRule) {
   return message || '';
 }
 
-export function startComposing(event: Event) {
-  event.target!.composing = true;
+export function startComposing({ target }: Event) {
+  target!.composing = true;
 }
 
-export function endComposing(event: Event) {
-  const { target } = event;
+export function endComposing({ target }: Event) {
   if (target!.composing) {
     target!.composing = false;
-    trigger(target as Element, 'input');
+    target!.dispatchEvent(new Event('input'));
   }
 }
 
diff --git a/packages/vant/src/notify/test/index.spec.js b/packages/vant/src/notify/test/index.spec.js
index a66520dac..76674af4b 100644
--- a/packages/vant/src/notify/test/index.spec.js
+++ b/packages/vant/src/notify/test/index.spec.js
@@ -1,6 +1,5 @@
 import { createApp } from 'vue';
 import { later } from '../../../test';
-import { trigger } from '../../utils';
 import { Notify } from '../function-call';
 import NotifyComponent from '../Notify';
 
@@ -65,6 +64,6 @@ test('should call onClick option when clicked', async () => {
 
   await later();
   const notify = document.querySelector('.van-notify');
-  trigger(notify, 'click');
+  notify.click();
   expect(onClick).toHaveBeenCalledTimes(1);
 });
diff --git a/packages/vant/src/utils/dom.ts b/packages/vant/src/utils/dom.ts
index 7791d791c..74d9e0a1c 100644
--- a/packages/vant/src/utils/dom.ts
+++ b/packages/vant/src/utils/dom.ts
@@ -66,12 +66,6 @@ export function preventDefault(event: Event, isStopPropagation?: boolean) {
   }
 }
 
-export function trigger(target: Element, type: string) {
-  const inputEvent = document.createEvent('HTMLEvents');
-  inputEvent.initEvent(type, true, true);
-  target.dispatchEvent(inputEvent);
-}
-
 export function isHidden(
   elementRef: HTMLElement | Ref<HTMLElement | undefined>
 ) {