The migration of human capital within the framework of the emerging superecosystem is a process affecting the work of economic and social subsystems directly through flow of value, and indirectly through flow of knowledge or spillover effects. The purpose of the research is to assess the impact of human capital migration on EAEU ecosystem efficiency. Research considers the effect of human capital migration on the EAEU countries. It also dwells on the economic and social subsystems of the integrating countries. However, fluctuations in the level of labour productivity as a result of basic elements flow between integrating ecosystems show changes in EAEU countries economic subsystems. Moreover, fluctuations in the quality of life of the population and the influx of talents are changes in the social subsystem of those countries. The hypothesis of the research consists in assessing direct effect of human capital migration between integrating ecosystems on labour productivity through the flow of value. It also assesses indirectly effect of human capital migration on the quality of life and the influx of talent through the flow of knowledge. According to the research results, there is no statically significant relationship between the studied variables – migration of human capital within the EAEU does not significantly affect the level of labour productivity, quality of life, and the influx of talents.