In the article, the authors consider the results of a study on the situation of ethnic Koreans in Kazakhstan. The role of the ethnic environment in the formation of their cultural orientations and language competencies is established. The results of the study suggest that there is a cultural homogenization of Kazakh Koreans. One of the tasks of such research is to study the ethno–cultural processes of ethnic groups belonging to such historical communities. One of which are the Koreans of the Republic of Kazakhstan. They argue that the importance of studying, and researching the ethnic and spiritual culture of Koreans is mainly since the most, essential components are included in the culture of life support. It seems that the emergence of socio-ethnic communities within multiethnic states is the most important component in achieving the harmonization of ethnic interactions. In connection with the above, according to the authors, the goal of studying historical and ethno-cultural communities of multiethnic states should be put at the fore front in the scientific search for ways of progressive development of Kazakh society.