Recently, the terms "adaptation and integration of migrants" are often found in scientific and public literature. However, there is still no unified opinion and clear understanding of the essence and content of these concepts, their distinctive features, which negatively affects the formation and implementation of the state policy of adaptation and integration of migrants and requires the development of theoretical provisions on these processes.

The purpose of this article is to develop theoretical provisions on the adaptation and integration of migrants, as well as on the state policy of adaptation and integration, the formation of a holistic view of these phenomena and processes.

The article is devoted to the theoretical understanding of the concepts: "adaptation of migrants", "integration of migrants", "state policy of adaptation and integration of foreign citizens", the author's vision of these phenomena is presented. The research used general scientific methods of analysis and synthesis, as well as a systems approach, methods of comparisons and content analysis.

The conclusion of the article contains the main theoretical positions that form a systemic view on the adaptation and integration of migrants, the state policy of adaptation and integration, which create a holistic view of these processes.

Key words: migration, migration, migration processes, migration policy, adaptation, adaptation, integration, integration, state policy of adaptation and integration,  theoretical provision on adaptation and integration of migrants.