This article attempts to reflect on three crucial issues concerning migration research. First of all, we seek the answer to the question: what is a specific problem of migration in sociology and in theoretical and methodological approach? For this purpose we reach to the roots of Polish researches of migrants, by Florian Znaniecki and Józef Chałasiński. Secondly, we try to reconstruct the map of current migration problems as is the effect of reviewing the literature of the subject. We pay particular attention to research on migration issues in the UK. Thirdly, we attempt to present our own research approach to Polish emigrants’ problems by using two basical categories: adaptation and integration. The subject of further empirical investigations will be the factors which facilitate or block these processes.