Objectives Abstract: The situation of the modern world, which was expressed by various signs of the times, was an impulse for the Catholic Church to rethink its place and role in today's culture and civilisation. The Vatican Council (1962-1965) was dedicated to the above issues. The Council outlined new lines of development for its own work. After it, the Church also encouraged all religious families to aggiornamento their charisms. The Salesians, reflecting on the preventive system, wanted their educational work with young people not to be different from the Church's mission, but to be rooted in it and to complement its mission. Keywords: preventive system, Second Vatican Council, poor youth, catechesis of evangelisation Material and methods An analysis of the documents of the General Chapters of the Salesian Society. Results For the author of the article, very interesting. Conclusions The content should be brought closer to the members of the Salesian Society