The article deals with the dynamics of development of the service sector in Russia in the conditions when the prolonged global economic crisis poses an urgent problem of determining the mechanisms of its overcoming. The economic importance of the service sector objectively increases in the phase of the crisis, as it allows to significantly expand production, makes it possible to equalize the standard of living. The article shows the applicability of the theory of sectors in modern conditions with a shift towards the dominance of the service sector. The development of the Quaternary sector was also noted. It includes information technology, education, research, banking and financial services. The growth of this sector is inherent in a highly developed country, because it is associated with highly qualified personnel. The connection between the development of services with the income of the population and the degree of their differentiation is traced. The growth of consumption, high profitability, fast payback and investment attractiveness of public catering as one of the components of the service sector make it a significant tool for expanding the market of services in the service sector. It is shown that the restructuring of the service sector is a systemic transformation, which means an increase in the share of high-quality products with high added value, carried out on the basis of modern resource-saving and environmentally friendly technologies and has a demand in the domestic and global markets. In order not to lose its position among the leaders of the world economy, Russia today must develop the tertiary and Quaternary sectors of the economy at an accelerated pace. Indicates positive trends, evidence of overcoming. the consequences of the crisis in Russia. For example, there is an increase in the business activity index (PMI), the market of street food and fast food is recovering and begins to grow. Appear innovative trends in shaping the future structure of public catering: the food delivery drones, paying bills in restaurants bitcoin, touchscreen kiosks, mobile apps for restaurant retail and etc. To consolidate the positive trends and required state regulation of development of sphere of services.