Mortuary Service Administration Act Article 29

Coffins, corpses or ashes (skeletons) in graves in public cemeteries cannot be disinterred without a disinterment permit issued by special municipalities, counties (towns, cities) competent authorities or the appointed authorities. Re-interments in accordance with the law are not subject to this restriction.
中文原文 殯葬管理條例第29條
公墓內之墳墓棺柩、屍體或骨灰(骸),非經直轄市、縣(市)、鄉(鎮、市)主管機關或其委託之機關核發起掘許可證明者,不得起掘。
但依法遷葬者,不在此限。

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