Hyperuricemia, a metabolic disorder resulting from purine metabolic dysfunction, poses a significant threat to public health. Probiotics, in particular lactic acid bacteria, have the potential to exert therapeutic benefits in the treatment of some metabolic diseases. In this study, 73 lactic acid bacteria were isolated from Koumiss, and their ability to degrade inosine and guanosine, inhibit xanthine oxidase, and other biological properties were assessed through in vitro experiments. The finds r