This invention discloses a beauty-enhancing and sleep-aiding herbal liqueur and its preparation method. The beauty-enhancing and sleep-aiding herbal liqueur comprises the following raw materials in parts by weight: 100 parts rice, 15-32 parts of a first herbal composition, and 98-137 parts of a second herbal composition; it also includes a compound koji, the
mass of which is 0.28-0.32% of the
mass of the rice. This invention, by preparing a compound koji suitable for beauty-enhancing and sleep-aiding herbal liqueur, deeply integrates the medicinal materials into the
fermentation agent koji, transforming the medicinal materials from "the object of action" into "participants and guides in the
fermentation process," serving as a functional
fermentation engine. It constructs a new dual-effect fermentation process combining "directed base
wine fermentation" and "secondary fermentation of extracts." The resulting beauty-enhancing and sleep-aiding herbal liqueur has a high content of core active ingredients, a good
flavor, and strong
palatability, which can simultaneously meet the two major needs of internal
sleep regulation and external
skin improvement, achieving the effect of "internal nourishment and external protection."