The work is dedicated to the quantitative evaluation of the macrobenthic community of Kislo-Sladkoye Lake. Thirty samples were taken from 16 stations at the following depths: 0.5, 1, 1.5, 2, 2.5, 3, 4 m. Ten species of macrobenthic invertebrates were found in the dredge samples: Insecta: Diptera - 4 taxa (larvae and adults); Mollusca: Gastropoda - 2 taxa; Oligochaeta - 1 taxon, there were also Nematoda, Chironomidae as well as houses of Pectinaria koreni and debris of Dynamena pumila. The largest quantities are reached by Hydrobia ulvae and Chironomus salinarius; nematodes, oligochaetes, chironomids and other beetles are sufficient, too. Benthic biomass in this lake varies from 0.59 to 202.62 g/m² with the highest amount of Hydrobia ulvae, Chironomus salinarius, Oligochaeta (at greater depths) and Ephydridae gen. sp.