diff --git a/custom/conf/app.example.ini b/custom/conf/app.example.ini
index bdcf6aaa17c3..54e727f9409b 100644
--- a/custom/conf/app.example.ini
+++ b/custom/conf/app.example.ini
@@ -1591,6 +1591,11 @@ PATH =
 ;ENABLED = false
 ;; Setting this to true will run all enabled cron tasks when Gitea starts.
 ;RUN_AT_START = false
+;;
+;; Note: ``SCHEDULE`` accept formats
+;;    - Full crontab specs, e.g. "* * * * * ?"
+;;    - Descriptors, e.g. "@midnight", "@every 1h30m"
+;; See more: https://pkg.go.dev/github.com/gogs/cron@v0.0.0-20171120032916-9f6c956d3e14
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;; Basic cron tasks - enabled by default
diff --git a/docs/content/doc/advanced/config-cheat-sheet.en-us.md b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
index eb169035ee8f..a37d06fab653 100644
--- a/docs/content/doc/advanced/config-cheat-sheet.en-us.md
+++ b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
@@ -704,6 +704,11 @@ NB: You must have `DISABLE_ROUTER_LOG` set to `false` for this option to take ef
 - `RUN_AT_START`: **false**: Run cron tasks at application start-up.
 - `NO_SUCCESS_NOTICE`: **false**: Set to true to switch off success notices.
 
+- `SCHEDULE` accept formats
+   - Full crontab specs, e.g. `* * * * * ?`
+   - Descriptors, e.g. `@midnight`, `@every 1h30m` ...
+   - See more: [cron decument](https://pkg.go.dev/github.com/gogs/cron@v0.0.0-20171120032916-9f6c956d3e14)
+
 ### Basic cron tasks - enabled by default
 
 #### Cron - Cleanup old repository archives (`cron.archive_cleanup`)
diff --git a/docs/content/doc/advanced/config-cheat-sheet.zh-cn.md b/docs/content/doc/advanced/config-cheat-sheet.zh-cn.md
index 1f7ae10c5daa..79cfd94cc714 100644
--- a/docs/content/doc/advanced/config-cheat-sheet.zh-cn.md
+++ b/docs/content/doc/advanced/config-cheat-sheet.zh-cn.md
@@ -245,6 +245,11 @@ test01.xls: application/vnd.ms-excel; charset=binary
 
 - `ENABLED`: 是否在后台运行定期任务。
 - `RUN_AT_START`: 是否启动时自动运行。
+- `SCHEDULE` 所接受的格式
+   - 完整 crontab 控制, 例如 `* * * * * ?`
+   - 描述符, 例如 `@midnight`, `@every 1h30m` ...
+   - 更多细节参见 [cron api文档](https://pkg.go.dev/github.com/gogs/cron@v0.0.0-20171120032916-9f6c956d3e14)
+
 
 ### Cron - Update Mirrors (`cron.update_mirrors`)