This paper is an introduction to the theoretical and methodological assumptions of Social Therapy and its practical application as a group intervention. Developed from the post-modern Marxist approach and inspired by the Vygotksy development theory, it is a performatory therapy which is very little known in Brazil. In this paper, initially, we will present the historical background in which this approach was developed and its main authors. Later we will present its concepts and methodology and finally its practices, taking the group as the focal point of this modality of work. Having in its proposal the permanent focus in building the group and in its emancipation, the Social Therapy has been presented as a potent group intervention in the construction of social change.