Various lactic acid bacteria were cultured in the presence of a purine body and the consumed amount of the purine body, the produced amount of degradation products of the purine body were measured, and a plurality of lactic acid bacteria which had a remarkable degradation ability of purine body were selected. Any of the lactic acid bacteria which were judged to have a high degradation ability of purine body by the selection was orally administered to rats raised with a purine body-containing feed, the general status of the rats and the blood uric acid level in the rats were determined, and the effect of administration of lactic acid bacteria on the serum uric acid level was studied. As a result, lactic acid bacteria: Lactobacillus gasseri OLL2959 and Lactobacillus oris OLL2779 which significantly reduce an increase of the serum uric acid level were found.