Summary. HIV/AIDS pandemic has become a barrier against human, economical, and political advance. Moreover, it mainly affects populations conformed by ethnic minorities, the poorest, and young people. Objective. To expose methodological and theoretical findings from specialized literature, demonstrating the value of peer education as a prevention strategy among young people. Methodology. Bibliographical searches. Results. Some concepts and theories about the development and behavior of adolescents, and methodological referents about training and performance/planning of educators for peer projects, point to it as a useful weapon for preventing HIV/AIDS. Conclusions. Peer education is a strategy created by young people for young people. It provides them empowering and skiUs in values training, wherein they, in association with others, can plan and develop their own projects, while perceiving their relationships, getting and providing feedback, and learning about their experiences.