diff --git a/CHANGELOG.en-US.md b/CHANGELOG.en-US.md
index f7fb8ac11..dae382fa6 100644
--- a/CHANGELOG.en-US.md
+++ b/CHANGELOG.en-US.md
@@ -1,5 +1,11 @@
 # CHANGELOG
 
+## Pending
+
+### Fixes
+
+- Fix `n-calendar`'s `on-update:value` prop type.
+
 ## 2.11.7
 
 ### Fixes
diff --git a/CHANGELOG.zh-CN.md b/CHANGELOG.zh-CN.md
index 6a86346d8..aee28e2d1 100644
--- a/CHANGELOG.zh-CN.md
+++ b/CHANGELOG.zh-CN.md
@@ -1,5 +1,11 @@
 # CHANGELOG
 
+## Pending
+
+### Fixes
+
+- 修复 `n-calendar` 的 `on-update:value` 属性类型
+
 ## 2.11.7
 
 ### Fixes
diff --git a/src/calendar/src/Calendar.tsx b/src/calendar/src/Calendar.tsx
index 0af56b9db..a9734029a 100644
--- a/src/calendar/src/Calendar.tsx
+++ b/src/calendar/src/Calendar.tsx
@@ -21,6 +21,7 @@ import { useConfig, useLocale, useTheme } from '../../_mixins'
 import type { ThemeProps } from '../../_mixins'
 import { calendarLight } from '../styles'
 import type { CalendarTheme } from '../styles'
+import type { OnUpdateValue, DateItem } from './interface'
 import style from './styles/index.cssr'
 
 const calendarProps = {
@@ -31,22 +32,12 @@ const calendarProps = {
     type: Number as PropType<number | null>,
     defualt: null
   },
-  'onUpdate:value': [Function, Array] as PropType<
-  MaybeArray<(value: number) => void>
-  >,
-  onUpdateValue: [Function, Array] as PropType<
-  MaybeArray<(value: number) => void>
-  >
+  'onUpdate:value': [Function, Array] as PropType<MaybeArray<OnUpdateValue>>,
+  onUpdateValue: [Function, Array] as PropType<MaybeArray<OnUpdateValue>>
 } as const
 
 export type CalendarProps = ExtractPublicPropTypes<typeof calendarProps>
 
-interface DateItem {
-  year: number
-  month: number
-  date: number
-}
-
 export default defineComponent({
   name: 'Calendar',
   props: calendarProps,
@@ -78,6 +69,7 @@ export default defineComponent({
       if (_onUpdateValue) {
         call(_onUpdateValue, value, time)
       }
+      console.log(time)
       uncontrolledValueRef.value = value
     }
 
diff --git a/src/calendar/src/interface.ts b/src/calendar/src/interface.ts
new file mode 100644
index 000000000..ca515e0fc
--- /dev/null
+++ b/src/calendar/src/interface.ts
@@ -0,0 +1,7 @@
+export type OnUpdateValue = (value: number, time: DateItem) => void
+
+export interface DateItem {
+  year: number
+  month: number
+  date: number
+}
diff --git a/src/calendar/tests/Calendar.spec.tsx b/src/calendar/tests/Calendar.spec.tsx
new file mode 100644
index 000000000..46ed9a71f
--- /dev/null
+++ b/src/calendar/tests/Calendar.spec.tsx
@@ -0,0 +1,21 @@
+import { h } from 'vue'
+import { mount } from '@vue/test-utils'
+import { NCalendar } from '../index'
+
+describe('n-button', () => {
+  it('should work with import on demand', () => {
+    mount(NCalendar)
+  })
+  it('props.onUpdate has correct type', () => {
+    ;<NCalendar
+      onUpdateValue={(
+        value: number,
+        time: {
+          date: number
+          month: number
+          year: number
+        }
+      ) => {}}
+    />
+  })
+})