The article is devoted to the historiographic review of the Russian scientific literature concerning the problem of the Khakass ethnos identification. The main attention is paid to the literature of the end of the XIX to the first decade of the XXI centuries period. In this precise period which the greatest research attention is observed in scientific substantiation of the ethnic processes taking place in the society. In the sphere of research there are scientific works based on the results of empirical research, analysis of primary sources, extensive archival materials, statistical data, containing the latest information concerning the national policy about conservation and development of the ethnos. In particular, in the article, concerning «State of the ethnic relations in the Khakass Republic in the estimates and conceptions on a mass mind» there are the results of the public opinion poll made in 1994, 1996 and 2005, materials of social-psychological research carried out in 2007 - 2008 in the Khakassiya, results of the study of the expeditionary project of the Siberian branch of the Russian Academy of Sciences «Historical memory of the ethnos and formation of the regional patriotism: the example of the nations of the Khakass Republic and Altai» made in 2006. The scientific works fully cover research devoted to the modern state of the Khakass ethnos, where there are the consideration of the interethnic relations of the Khakass with another ethnos, mainly with the Russians and also with the kernel elements of culture such as language and religion. Besides, the great attention is paid to the scientific works containing the newest conceptions connected with ethnodifferentiative factors of the ethnic identification. It is sufficiently disclosed measures proposed by the authors for the preservation and progress of the Khakass ethnos in condition of polyethnic society. As a result of the review on the emphasized problem the insufficient development of the problem of the Khakass ethnos consolidation in the residence condition on another territory, particularly on the territory of the Krasnoyarsk region, is described in the article. It is topical and necessity to continue the broad and multifaceted research, interpretation of the historical way of formation and development of the Khakass ethnos identification on the territory of the Krasnoyarsk region.