In Mexico, 4 out of every adolescent, between 12 and 17 years old, are or have been in a conjugal union. In the state of Guerrero, this practice has historical roots based on some uses and customs of the indigenous communities and currently shows one of the highest rate in the country, which occur mostly through the sale of girls and adolescents to adult men. Through the program "Help them to not reach the altar", implemented from 2017 to date, IMIFAP has achieved that *12 localities in Metlatonoc, Guerrero, one of the poorest municipalities in Mexico, have put an end to the sale of girls for marriage, through the signing of Acts of Agreement by the local authorities. This means that 7,000 girls and adolescents, between 10 and 17 years old, will not be sold into marriage by their parents and will be able to choose a life project based on their rights. This has been achieved through the following strategies: (1) Sensitization of inhabitants; (2) Mobilization of the Community Assemblies, to achieve the signing of the Act of Agreement for the prohibition of the sale of girls and women for marriage or union; (3) Strengthening the capacities of teachers of primary and secondary school in terms of the rights of children and adolescents, violence prevention, and sexual and reproductive health; and (4) Psychoeducation of children and adolescents in primary and secondary school on the rights of children and adolescents, violence prevention, and sexual and reproductive health. The municipality of Metlatonoc is made up of 66 localities, *so IMIFAP needs support to eradicate the child marriage in 5 more localities in this municipality, which will mean that approximately 3,000 girls will not be sold for marriage.