Regulations Governing the Detention of the Aliens Article 7
If a female detainee requests to carry her child under three (3) years old, the request may be approved.
中文原文 外國人收容管理規則第7條
受收容人為女性，其請求攜帶未滿三歲之子女者，得准許之。
English translation for reference only; the Chinese text prevails. Not legal advice.