Administrative Appeal Act Article 60

The administrative appellant may withdraw the administrative appeal before the administrative appeal decision has been served. While the administrative appeal has been withdrawn, to file a same administrative appeal by the administrative appellant shall not be allowed.
中文原文 訴願法第60條
訴願提起後,於決定書送達前,訴願人得撤回之。
訴願經撤回後,不得復提起同一之訴願。

English translation for reference only; the Chinese text prevails. Not legal advice.