Local Government Act Article 58

District offices of special municipalities and cities shall have a chief administrator, who shall be appointed by the mayor in accordance with law. The chief administrator is authorized by the mayor to handle district affairs and supervise their subordinates.If a district in a special municipality is created due to a change in the status of township/city within the special municipality, the mayor of the township/city who is in office the day before the change in status will be employed by the mayor of the special municipality as a confidential staff member to serve as the district’s chief administrator; the term of office shall be four (4) years starting from the day the change in status of the township/city takes effect. A mayor of a township/city shall not be appointed to the position if any of the following cases applies:1. The office holder is accused of having committed offenses stipulated in Subparagraphs 1 and 2, Paragraph 1, Article 78.2. The office holder is accused of having committed vote-buying offenses stipulated in the President and Vice President Election and Recall Law, Public Officials Election and Recall Law, Farmers’ Association Act or Fishermen’s Association Act, and a prosecution has been brought.3. The office holder has served for two (2) successive terms.4. The office holder is merely acting as a deputy in accordance with law.A chief administrator who is employed as a confidential staff member in accordance with the preceding paragraphs shall be removed from office if any of the following cases applies:1. The office holder is barred from holding the position for reasons indicated in Subparagraph 1 or Subparagraph 2 of the preceding paragraph, or Paragraph 1, Article 79.2. The office holder is being held under detention or is wanted in accordance with criminal procedures.If a district within a special municipality is created due to a change in the status of a mountain indigenous township within the municipality, the district chief administrator shall be a person of mountain indigenous ancestry.
中文原文 地方制度法第58條
直轄市、市之區公所,置區長一人,由市長依法任用,承市長之命綜理區政,並指揮監督所屬人員。
直轄市之區由鄉(鎮、市)改制者,改制日前一日仍在職之鄉(鎮、市)長,由直轄市長以機要人員方式進用為區長;其任期自改制日起,為期四年。
但有下列情事之一者,不得進用:
一、涉嫌犯第七十八條第一項第一款及第二款所列之罪,經起訴。
二、涉嫌犯總統副總統選舉罷免法、公職人員選舉罷免法、農會法或漁會法之賄選罪,經起訴。
三、已連任二屆。
四、依法代理。
前項以機要人員方式進用之區長,有下列情事之一者,應予免職:
一、有前項第一款、第二款或第七十九條第一項各款所列情事。
二、依刑事訴訟程序被羈押或通緝。
直轄市之區由山地鄉改制者,其區長以山地原住民為限。

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