diff --git a/src/collapse/index.ts b/src/collapse/index.ts
index 5897ca13679..97afb1d046d 100644
--- a/src/collapse/index.ts
+++ b/src/collapse/index.ts
@@ -1,4 +1,10 @@
 export { collapseProps, default as NCollapse } from './src/Collapse'
-export type { CollapseProps } from './src/Collapse'
+export type { CollapseProps, CollapseSlots } from './src/Collapse'
 export { collapseItemProps, default as NCollapseItem } from './src/CollapseItem'
-export type { CollapseItemProps } from './src/CollapseItem'
+export type { CollapseItemProps, CollapseItemSlots } from './src/CollapseItem'
+export type {
+  CollapseArrowSlotOptions,
+  CollapseItemArrowSlotOptions,
+  CollapseItemHeaderExtraSlotOptions,
+  CollapseItemHeaderSlotOptions
+} from './src/interface'
diff --git a/src/collapse/src/Collapse.tsx b/src/collapse/src/Collapse.tsx
index 56b4fa5a3df..951fd26f48e 100644
--- a/src/collapse/src/Collapse.tsx
+++ b/src/collapse/src/Collapse.tsx
@@ -1,6 +1,7 @@
 import type { ThemeProps } from '../../_mixins'
 import type { ExtractPublicPropTypes, MaybeArray } from '../../_utils'
 import type {
+  CollapseArrowSlotOptions,
   HeaderClickInfo,
   OnItemHeaderClick,
   OnItemHeaderClickImpl,
@@ -18,7 +19,8 @@ import {
   provide,
   type Ref,
   ref,
-  type Slots
+  type Slots,
+  type SlotsType
 } from 'vue'
 import { useConfig, useTheme, useThemeClass } from '../../_mixins'
 import { useRtl } from '../../_mixins/use-rtl'
@@ -82,6 +84,11 @@ export const collapseProps = {
 
 export type CollapseProps = ExtractPublicPropTypes<typeof collapseProps>
 
+export interface CollapseSlots {
+  default?: any
+  arrow?: (props: CollapseArrowSlotOptions) => any
+}
+
 export interface NCollapseInjection {
   props: ExtractPropTypes<typeof collapseProps>
   expandedNamesRef: Ref<string | number | Array<string | number> | null>
@@ -100,6 +107,7 @@ export const collapseInjectionKey
 export default defineComponent({
   name: 'Collapse',
   props: collapseProps,
+  slots: Object as SlotsType<CollapseSlots>,
   setup(props, { slots }) {
     const { mergedClsPrefixRef, inlineThemeDisabled, mergedRtlRef }
       = useConfig(props)
diff --git a/src/collapse/src/CollapseItem.tsx b/src/collapse/src/CollapseItem.tsx
index 2b9e51f9221..5d629e5d81a 100644
--- a/src/collapse/src/CollapseItem.tsx
+++ b/src/collapse/src/CollapseItem.tsx
@@ -1,4 +1,9 @@
 import type { ExtractPublicPropTypes } from '../../_utils'
+import type {
+  CollapseItemArrowSlotOptions,
+  CollapseItemHeaderExtraSlotOptions,
+  CollapseItemHeaderSlotOptions
+} from './interface'
 import { createId, happensIn } from 'seemly'
 import { useMemo } from 'vooks'
 import { computed, defineComponent, h, inject, type PropType, toRef } from 'vue'
@@ -26,6 +31,13 @@ export const collapseItemProps = {
 
 export type CollapseItemProps = ExtractPublicPropTypes<typeof collapseItemProps>
 
+export interface CollapseItemSlots {
+  default?: any
+  header?: (props: CollapseItemHeaderSlotOptions) => any
+  'header-extra'?: (props: CollapseItemHeaderExtraSlotOptions) => any
+  arrow?: (props: CollapseItemArrowSlotOptions) => any
+}
+
 export default defineComponent({
   name: 'CollapseItem',
   props: collapseItemProps,
diff --git a/src/collapse/src/interface.ts b/src/collapse/src/interface.ts
index 7fe3765d773..87cb6c1d5db 100644
--- a/src/collapse/src/interface.ts
+++ b/src/collapse/src/interface.ts
@@ -36,3 +36,19 @@ export interface HeaderClickInfo<T> {
   expanded: boolean
   event: MouseEvent
 }
+
+export interface CollapseArrowSlotOptions {
+  collapsed: boolean
+}
+
+export interface CollapseItemHeaderSlotOptions {
+  collapsed: boolean
+}
+
+export interface CollapseItemHeaderExtraSlotOptions {
+  collapsed: boolean
+}
+
+export interface CollapseItemArrowSlotOptions {
+  collapsed: boolean
+}