The conceptual and categorical framework for legal regulation of the migration (relocation) of the population from affected areas in emergency of natural and man-made nature is considered, i.e. the concept of "temporary resettlement" provided by the Federal Constitutional Law "On the State of Emergency" and the concept of "evacuation measures" stipulated in the law "On Protection of the Population and Territories from Natural and Man-Made Emergencies". Despite the similarity of the legal mechanisms for regulating the processes that define these concepts, the author's conclusion outlines their differences. Among the main differences are the following: decision on carrying out of temporary resettlement and evacuation measures is taken in accordance with the legal norms of various legislative acts of different significance; the level of threat to life and health of people in areas where a state of emergency has been introduced is usually much higher than in the zones of emergency of natural and man-made nature, and for this reason the temporarily evacuated to safe areas stay in the zone of temporary resettlement for a longer period of time. Therefore, there is a need to create conditions more adapted to temporary living. The article also introduces the author's definition of the term "temporary resettlement".