To provide a composition for reducing in-blood urine acid values.SOLUTION: The present invention provides a composition for reducing in-blood urine acid values containing chitosan and ampelopsin.SELECTED DRAWING: Figure 2【課題】血中尿酸値低減用組成物を提供する。【解決手段】キトサンとアンペロプシンを含有する血中尿酸値低減用組成物。【選択図】図2