This article is a detailed abstract of the scholar report about the international research implemented by the team of Ukrainian scholars in cooperation with Polish and Hungarian colleagues initiated by the International Organization for Migrations in 1998. The special attention was devoted to the character, scale of such a kind of international illegal busyness as illegal migration and transportation of migrants, to legal aspects of the counteraction to illegal migration and transportation of people through the territory of Ukraine. According to international experience the complex of recommendations was formulated about the actions on a matter of prevention of illegal migration and transportation of migrants, as well of their adaptation in Ukraine.