||Diversity of mammals in Besh Aral nature reserve, Kyrgyzstan is presented. Also analysis of the density of mammals in their habitats is given. Totally 31 mammals inhabited in nature reserve: 13 rodents, 11 carnivores, 3 ungulates, 2 hares, 1 insectivore and 1 bat. Number of snow leopard assessed as 8 individuals, Turkestan lynx 10, wild boar 100 and ibex 400 individuals. Snow leopard and Menzbier's marmot included in national Red data Book as well as in Global Red List.