This article examines the principles of socio-economic development. The aim of the article is to find out how to achieve balanced development of society and society, based on the concept of sustainable development and the main role of man, who occupies a central place in the eco-socio-economical system, who is not an object, but a subject of development. The interconnections of sustainable development and their main components are considered. Necessary prerequisites for transition from traditional economic relations to new economy are touched upon