the article is based on the results of a study conducted as part of the monitoring of integration processes in the EEU. It describes the interethnic relations of migrants from the member States of the Eurasian economic Union (EEU) who live and work in the Moscow megalopolis, the real state of interethnic harmony as a stable core of integration processes, the attitude to the goals and results of the functioning of the Eurasian Union, the interest in further deepening integration processes, and the readiness to interact with citizens of the EEU member States in professional and informal spheres of communication; the results of the formation of civil identity, interethnic attitudes, inter-group differentiation, problems and contradictions that reduce the ethnocomplementarity of interethnic relations, support for integration processes in the EEU are shown.