The family is the appropriate framework for the development of any child. Outside it, the young being is doomed to social maladjustment. In this sense, the phenomenon of street children expresses an imbalance at both the individual and social levels. Its reduction requires an analysis of its main determinants. Here, individual resilience is presented as the major element in the family reintegration of these children. To this end, a questionnaire was submitted to a sample of 64 street children who had returned or were returning to their families. The analysis of the results obtained indicates that the subjects with a high level of resilience succeed in their family reintegration, whereas those with a low level of resilience fail in this process of family reintegration.