ENThe collective monograph presents the results of authors two years research work and one of the project’s result. The project was implemented under the programme funded by Research Council of Lithuania and Belarusian Republican Foundation for Fundamental Research. The project topic - Social entrepreneurship as a form of innovation activity in Belarus and Lithuania. The research aim has to cover the conceptional analysis of social business development and practical adoption. The research methods were applied in getting research results: monograph and descriptive analysis, content analysis, synthesis and analysis, abstracting. The research topic relevance streams from the need for scientifically based programs for development of social entrepreneurship as a factor of guaranteed social interaction and partnership as well as a form of innovative activity. Social entrepreneurship serves as an indicator of the culture of social interaction and an additional resource for implementation of social support and protection. Being a form of social initiative and responsibility, social entrepreneurship is dedicated to dealing with issues of socially vulnerable groups of population through innovation in provision of economic and social services to population and promotes consolidation of society. During the project time, the project partners have been researched the problems based on identification the framework of the social business development in Belarus and Lithuania. Project participants conducted the empirical research in Belarus. The main objective of empirical research: to investigate the mechanism of interaction between social factors, which promote development of social entrepreneurship and market of social services in Belarus.