This article analyzes the permanence and cohabitation of the sin-crime of sodomy in the criminal law in force in Chile during the 19th century. The emphasis of this proposal is to understand the crime of sodomy since the domination of the Spanish Empire (1541-1810) and its continuity in the liberal state through the Criminal Code of 1874. This study will review the different criminal law laws related to the crime of sodomy, the Proceedings of the Drafting Commission of the Chilean Criminal Code and the first national criminal treaties that referred to the act against nature.