<p align="justify">In Indonesia, when it comes to marriage, it is regulated that the legal age limit for marriage is 19 years for men and 16 years for women. The purpose of this study is to determine the perspective of legal protection for underage child marriages. This study uses normative juridical research methods, prioritizing secondary data in the form of primary legal materials originating from laws and regulations related to the studies discussed, and using relevant literature. As for the results in this study, namely from the perspective of the Marriage Law, the result of underage marriage is clearly contrary to the purpose of marriage. With the existence of underage marriages, this indicates that Law Number 1 of 1974 concerning Marriage and Government Regulation Number 9 of 1975 concerning Regulations for Implementing Law Number 1 of 1974, are less effective. Given the existence of underage marriages, there are many cases of divorce because these marriages are carried out by children who are still underage, so they have not been able to fully carry out the objectives of the marriage stated in the statutory regulations.</p>