diff --git a/packages/components/avatar/__tests__/avatar.spec.ts b/packages/components/avatar/__tests__/avatar.spec.ts
index 3332df1dbc..adec67f0fb 100644
--- a/packages/components/avatar/__tests__/avatar.spec.ts
+++ b/packages/components/avatar/__tests__/avatar.spec.ts
@@ -6,7 +6,7 @@ import {
   mockImageEvent,
 } from '@element-plus/test-utils'
 
-import Avatar from '../src/index.vue'
+import Avatar from '../src/avatar.vue'
 
 describe('Avatar.vue', () => {
   mockImageEvent()
diff --git a/packages/components/avatar/index.ts b/packages/components/avatar/index.ts
index dd78f0819d..9ca8e85c0e 100644
--- a/packages/components/avatar/index.ts
+++ b/packages/components/avatar/index.ts
@@ -1,12 +1,7 @@
-import { App } from 'vue'
-import type { SFCWithInstall } from '@element-plus/utils/types'
-import Avatar from './src/index.vue'
+import Avatar from './src/avatar.vue'
+import { withInstall } from '@element-plus/utils/with-install'
 
-Avatar.install = (app: App): void => {
-  app.component(Avatar.name, Avatar)
-}
+export const ElAvatar = withInstall(Avatar)
+export default ElAvatar
 
-const _Avatar = Avatar as SFCWithInstall<typeof Avatar>
-
-export default _Avatar
-export const ElAvatar = _Avatar
+export * from './src/avatar'
diff --git a/packages/components/avatar/src/avatar.ts b/packages/components/avatar/src/avatar.ts
new file mode 100644
index 0000000000..64725a1f27
--- /dev/null
+++ b/packages/components/avatar/src/avatar.ts
@@ -0,0 +1,35 @@
+import { buildProp } from '@element-plus/utils/props'
+import type { CSSProperties, ExtractPropTypes } from 'vue'
+
+export const avatarProps = {
+  size: buildProp({
+    type: [Number, String],
+    values: ['large', 'medium', 'small'],
+    default: 'large',
+    validator: (val): val is number => typeof val === 'number',
+  } as const),
+
+  shape: buildProp({
+    type: String,
+    values: ['circle', 'square'],
+    default: 'circle',
+  } as const),
+
+  icon: String,
+  src: {
+    type: String,
+    default: '',
+  },
+  alt: String,
+  srcSet: String,
+  fit: buildProp<CSSProperties['objectFit']>({
+    type: String,
+    default: 'cover',
+  } as const),
+} as const
+export type AvatarProps = ExtractPropTypes<typeof avatarProps>
+
+export const avatarEmits = {
+  error: (evt: Event) => evt instanceof Event,
+}
+export type AvatarEmits = typeof avatarEmits
diff --git a/packages/components/avatar/src/avatar.vue b/packages/components/avatar/src/avatar.vue
new file mode 100644
index 0000000000..e8e5bd2ed5
--- /dev/null
+++ b/packages/components/avatar/src/avatar.vue
@@ -0,0 +1,75 @@
+<template>
+  <span :class="avatarClass" :style="sizeStyle">
+    <img
+      v-if="(src || srcSet) && !hasLoadError"
+      :src="src"
+      :alt="alt"
+      :srcset="srcSet"
+      :style="fitStyle"
+      @error="handleError"
+    />
+    <i v-else-if="icon" :class="icon"></i>
+    <slot v-else></slot>
+  </span>
+</template>
+
+<script lang="ts">
+import { defineComponent, computed, ref, watch } from 'vue'
+import { avatarEmits, avatarProps } from './avatar'
+
+import type { CSSProperties } from 'vue'
+
+export default defineComponent({
+  name: 'ElAvatar',
+
+  props: avatarProps,
+  emits: avatarEmits,
+
+  setup(props, { emit }) {
+    const hasLoadError = ref(false)
+
+    const avatarClass = computed(() => {
+      const { size, icon, shape } = props
+      const classList = ['el-avatar']
+      if (size && typeof size === 'string') classList.push(`el-avatar--${size}`)
+      if (icon) classList.push('el-avatar--icon')
+      if (shape) classList.push(`el-avatar--${shape}`)
+      return classList
+    })
+
+    const sizeStyle = computed<CSSProperties>(() => {
+      const { size } = props
+      return typeof size === 'number'
+        ? {
+            height: `${size}px`,
+            width: `${size}px`,
+            lineHeight: `${size}px`,
+          }
+        : {}
+    })
+
+    const fitStyle = computed<CSSProperties>(() => ({
+      objectFit: props.fit,
+    }))
+
+    // need reset hasLoadError to false if src changed
+    watch(
+      () => props.src,
+      () => (hasLoadError.value = false)
+    )
+
+    function handleError(e: Event) {
+      hasLoadError.value = true
+      emit('error', e)
+    }
+
+    return {
+      hasLoadError,
+      avatarClass,
+      sizeStyle,
+      fitStyle,
+      handleError,
+    }
+  },
+})
+</script>
diff --git a/packages/components/avatar/src/index.vue b/packages/components/avatar/src/index.vue
deleted file mode 100644
index 74a323e675..0000000000
--- a/packages/components/avatar/src/index.vue
+++ /dev/null
@@ -1,109 +0,0 @@
-<template>
-  <span :class="avatarClass" :style="sizeStyle">
-    <img
-      v-if="(src || srcSet) && !hasLoadError"
-      :src="src"
-      :alt="alt"
-      :srcset="srcSet"
-      :style="fitStyle"
-      @error="handleError"
-    />
-    <i v-else-if="icon" :class="icon"></i>
-    <slot v-else></slot>
-  </span>
-</template>
-
-<script lang="ts">
-import { defineComponent, computed, ref, watch, toRef } from 'vue'
-import type { CSSProperties, PropType } from 'vue'
-
-const ERROR_EVENT = 'error'
-export default defineComponent({
-  name: 'ElAvatar',
-  props: {
-    size: {
-      type: [Number, String] as PropType<number | string>,
-      validator(this: never, val: unknown) {
-        if (typeof val === 'string') {
-          return ['large', 'medium', 'small'].includes(val)
-        }
-        return typeof val === 'number'
-      },
-      default: 'large',
-    },
-    shape: {
-      type: String,
-      default: 'circle',
-      validator(this: never, val: string) {
-        return ['circle', 'square'].includes(val)
-      },
-    },
-    icon: String,
-    src: {
-      type: String,
-      default: '',
-    },
-    alt: String,
-    srcSet: String,
-    fit: {
-      type: String,
-      default: 'cover',
-    },
-  },
-  emits: [ERROR_EVENT],
-  setup(props, { emit }) {
-    const hasLoadError = ref(false)
-
-    const src = toRef(props, 'src')
-    // need reset hasLoadError to false if src changed
-    watch(src, () => {
-      hasLoadError.value = false
-    })
-
-    const avatarClass = computed(() => {
-      const { size, icon, shape } = props
-      const classList = ['el-avatar']
-      if (size && typeof size === 'string') {
-        classList.push(`el-avatar--${size}`)
-      }
-      if (icon) {
-        classList.push('el-avatar--icon')
-      }
-      if (shape) {
-        classList.push(`el-avatar--${shape}`)
-      }
-      return classList
-    })
-
-    const sizeStyle = computed(() => {
-      const { size } = props
-      return typeof size === 'number'
-        ? {
-            height: `${size}px`,
-            width: `${size}px`,
-            lineHeight: `${size}px`,
-          }
-        : {}
-    })
-
-    const fitStyle = computed(
-      () =>
-        ({
-          objectFit: props.fit,
-        } as CSSProperties)
-    )
-
-    function handleError(e: Event) {
-      hasLoadError.value = true
-      emit(ERROR_EVENT, e)
-    }
-    return {
-      hasLoadError,
-      avatarClass,
-      sizeStyle,
-      handleError,
-      fitStyle,
-    }
-  },
-})
-</script>