The actual problem in the course of Kr and Хe production from their concentrates is reducing energy consumption, increasing extraction degree and accident prevention. The description of krypton and xenon concentrate sources has been given. The basic stages of the technology of obtaining krypton and xenon from air have been considered. The results of patent search for the ways of a primary concentrate enrichment as well as krypton and xenon mixture separation have been presented. The advantage of the absorption technology for obtaining krypton and xenon concentrates has been noted. The reserves for increasing the efficiency of certain installations which carry out a work cycle of obtaining krypton and xenon have been found.