The invention discloses a rhizoma polygonati extract and application thereof in preparation of a functional alcoholic beverage, and belongs to the technical field of functional alcoholic beverages. The prepared rhizoma polygonati extract can be mixed and dissolved with beer and
white spirit, and the rise of
uric acid caused by drinking a large amount of beer can be remarkably reduced by drinking the beer added with the prepared rhizoma polygonati extract; the increase of AST and ALT caused by drinking a large amount of
white spirit can be remarkably reduced by drinking the
white spirit added with the rhizoma polygonati extract prepared by the invention, and the rhizoma polygonati extract can be used for developing beer with the function of reducing
uric acid and white spirit with the function of preventing acute alcoholic
liver injury; the provided rhizoma polygonati extract does not affect the appearance quality and taste of beer and white spirit, the preparation method is simple and easy to operate, special equipment is not needed, high temperature and
high pressure are not needed, the preparation process is safe, toxic and harmful substances are not generated, energy is saved, environment friendliness is achieved, and the method is suitable for large-scale production.