The paper in focus aims to discuss the process and practice of the foster care where children and teenagers are usually victims of the household violence. The foster care as a social support has been taken place in Brazil since the colonial period. But we are only going to study the cases under the public power that have been happened after the Child and Teenager Statute, since 1990. Only from 1997 to 2005. Foster care means the practice that takes a guy, a child, a teenager or an adult to deal with a passing or permanent member from another family, someone that is not from the family where he or she was born, according to Matilde Luna´s opinion, a psychologist from Argentina. It can be considered as an alternative from institutionalization for some children and teenager when it´s temporary and transitory. It´s a large and different process according to the society and culture. Our analyses are related to the aspects that may increase the permanence probability in the original family after they have been had under a formal3 foster care. These aspects have not been studied through the programs we´ve attended. Household violence and foster care were the categories used. To reach our goals we interviewed several actors involved in the foster care process: families, technicians and other people who are engaged in the projects. Four regions from Rio de Janeiro and another five4 different regions in Brazil where chosen in our research. The results found are within our reach. We may answer some questions and discuss about everything.