The article deals with communicative mechanisms of social interaction between libraries and different population categories. In conditions of information society, crisis situations, and war conflicts libraries should not only be supported by society but also to reintegrate into social life. Legislative instruments that regulate the work of libraries for children and determine its place in society were analyzed. The information about sociocultural, educational and informational functions of libraries much broader on the current conditions than set by legislation have been considered. The study finds that libraries for children work with different categories of young people including relocates, children with limited health capacities, teach finance and computer basics, develop creative talents and provide psychological help for parents. The paper presents an idea that libraries are not only limited to leisure activity institutions but have an important role in the process of socialization. The article deals with mechanism of library interaction with young people, particularly social partnership. Based on the research of sites and blogs of regional children’s libraries, the National Library of Ukraine for children, the main mechanisms of communication for social integration of young people into public and social life were determined
