Abstract: Highly-enriched stable isotopes are used in more and more wide areas, while electromagnetic separation method is the only feasible way to enrich many species like Rb, K, etc. The technology development of isotope electromagnetic separation technology begins in 1960’s, at present EMIS-170 is the only one functioning yielding-type electromagnetic isotope separator. EMIS-170 was technically renewed during 2013—2016 and the enriching ability of stable isotope was enhanced significantly. Many kinds of isotopes enriched are successfully used in areas of navigation, industry, agriculture, scientific research etc. The localization of isotope products is realized and remarkable social benefits are achieved.