Provided is a blood uric acid level-lowering agent that is derived from a natural product and can be maintained for a long period of time. A blood uric acid level-lowering agent comprising a cheese enzyme degradation product as an active ingredient.天然物由来で長期間維持して摂取可能な血中尿酸値低下剤を提供する。チーズ酵素分解物を有効成分とする血中尿酸値低下剤。