diff --git a/docs_dev/docs/about_coscup/calendar.md b/docs_dev/docs/about_coscup/calendar.md
new file mode 100644
index 0000000..4090a9a
--- /dev/null
+++ b/docs_dev/docs/about_coscup/calendar.md
@@ -0,0 +1,16 @@
+---
+title: COSCUP Event Calendar
+summary: Starting from 2023, we will begin using a calendar to document COSCUP event schedules.
+description: Starting from 2023, we will begin using a calendar to document COSCUP event schedules.
+---
+
+# COSCUP Event Calendar
+
+<iframe src="https://calendar.google.com/calendar/embed?height=430&wkst=2&ctz=Asia%2FTaipei&bgcolor=%23ffffff&mode=AGENDA&src=Y19hMzc2ZWM4YmViNmVmMGFiM2FjYjVmZTMyMTM4ODBkZmNiYmE1MGNlODkxMDc1MzJhYWNiZmRkYTcxYzZlMjk0QGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20&color=%2333B679" style="border-width:0" width="100%" height="430" frameborder="0" scrolling="no"></iframe>
+
+Add the COSCUP calendar by the following method:
+
+- Driect click the "**+ Google Calendar**" on the right-bottom side to add.
+- Add to Google Calendar: [Click here to add](https://calendar.google.com/calendar/u/0?cid=Y19hMzc2ZWM4YmViNmVmMGFiM2FjYjVmZTMyMTM4ODBkZmNiYmE1MGNlODkxMDc1MzJhYWNiZmRkYTcxYzZlMjk0QGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20).
+- Public address in iCal format: [Click and hold or click right here to save](https://calendar.google.com/calendar/ical/c_a376ec8beb6ef0ab3acb5fe3213880dfcbba50ce89107532aacbfdda71c6e294%40group.calendar.google.com/public/basic.ics).
+- Public URL to this calendar: [Click here to open](https://calendar.google.com/calendar/embed?height=430&wkst=2&ctz=Asia%2FTaipei&bgcolor=%23ffffff&mode=MONTH&src=Y19hMzc2ZWM4YmViNmVmMGFiM2FjYjVmZTMyMTM4ODBkZmNiYmE1MGNlODkxMDc1MzJhYWNiZmRkYTcxYzZlMjk0QGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20&color=%2333B679).
\ No newline at end of file
diff --git a/docs_dev/docs/about_coscup/calendar.zh-TW.md b/docs_dev/docs/about_coscup/calendar.zh-TW.md
new file mode 100644
index 0000000..632b39f
--- /dev/null
+++ b/docs_dev/docs/about_coscup/calendar.zh-TW.md
@@ -0,0 +1,16 @@
+---
+title: COSCUP 活動行事曆
+summary: 從 2023 年開始使用紀錄 COSCUP 活動行事曆。
+description: 從 2023 年開始使用紀錄 COSCUP 活動行事曆。
+---
+
+# COSCUP 活動行事曆
+
+<iframe src="https://calendar.google.com/calendar/embed?height=430&wkst=2&ctz=Asia%2FTaipei&bgcolor=%23ffffff&mode=AGENDA&src=Y19hMzc2ZWM4YmViNmVmMGFiM2FjYjVmZTMyMTM4ODBkZmNiYmE1MGNlODkxMDc1MzJhYWNiZmRkYTcxYzZlMjk0QGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20&color=%2333B679" style="border-width:0" width="100%" height="430" frameborder="0" scrolling="no"></iframe>
+
+透過以下方式加入 COSCUP 行事曆：
+
+- 直接點擊上方行事曆右下方的**加入按鈕**加入。
+- 加入到 Google 行事曆：[點這裡加入](https://calendar.google.com/calendar/u/0?cid=Y19hMzc2ZWM4YmViNmVmMGFiM2FjYjVmZTMyMTM4ODBkZmNiYmE1MGNlODkxMDc1MzJhYWNiZmRkYTcxYzZlMjk0QGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20)。
+- 公開的 iCal 格式行事曆：[長按或右鍵這裡另存檔案](https://calendar.google.com/calendar/ical/c_a376ec8beb6ef0ab3acb5fe3213880dfcbba50ce89107532aacbfdda71c6e294%40group.calendar.google.com/public/basic.ics)。
+- 行事曆公開的 URL 連結：[點這裡開啟](https://calendar.google.com/calendar/embed?height=430&wkst=2&ctz=Asia%2FTaipei&bgcolor=%23ffffff&mode=MONTH&src=Y19hMzc2ZWM4YmViNmVmMGFiM2FjYjVmZTMyMTM4ODBkZmNiYmE1MGNlODkxMDc1MzJhYWNiZmRkYTcxYzZlMjk0QGdyb3VwLmNhbGVuZGFyLmdvb2dsZS5jb20&color=%2333B679)。
diff --git a/docs_dev/mkdocs.yml b/docs_dev/mkdocs.yml
index 0374d71..47c6f96 100644
--- a/docs_dev/mkdocs.yml
+++ b/docs_dev/mkdocs.yml
@@ -79,6 +79,7 @@ nav:
       - Team Leader Handbook: about_coscup/team_leader_handbook.md
       - Team Member Handbook: about_coscup/team_member_handbook.md
       - Team Setup: about_coscup/team_setup.md
+      - COSCUP Calendar: about_coscup/calendar.md
       - Email Newsletters:
           - Overview: about_coscup/newsletters/overview.md
           - 2024:
@@ -174,6 +175,7 @@ plugins:
             Accounting System: 財務會計系統
             Announcement: 訊息發佈
             Build Base Image: 建立基本映像檔
+            COSCUP Calendar: 活動行事曆
             Community Volunteers Plan: 社群志工參與計畫
             Contributing: 貢獻
             Dev Page: 開發設定頁面