Police Personnel Management Act Article 6

Prior to appointment, prospective officers shall be vetted regarding their personal integrity, loyalty, behavior, and physical and mental health by the institutions or academies that they will be serving. If necessary, assistance from relevant authorities may be requested for the vetting process.Regulations governing whom and what should be vetted and how the vetting should be conducted shall be formulated by the Ministry of the Interior.Prior to appointing a police officer, the appointing authority shall conduct a background check on the prospective officer’s personal character, loyalty, conduct, experience and physical and mental health; If necessary, relevant authorities may be consulted for assistance.The objects of the background check mentioned in the preceding paragraph, the subject matter, methods, and other related matters shall be determined by the Ministry of the Interior.Before the personnel assume office, attention shall also be paid to their intelligence, physical fitness, knowledge, experience, leadership abilities, and their ability to adapt to the local environment, language, customs, habits, and public sentiment of their duty station.
中文原文 警察人員人事條例第6條
擬任警察官前,其擬任機關、學校應就其個人品德、忠誠、素行經歷及身心健康狀況實施查核;必要時,得洽請有關機關協助辦理。
前項查核之對象、項目、方式及其他相關事項之辦法,由內政部定之。
警察官於任職前,應注意其智力、體能、學識、經驗及領導才能,並考量其對任職之地區、語言、風俗、習慣、民情等適應能力。

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