Health-care beverage and preparation method thereof

The invention discloses a health-care beverage and a preparation method thereof, and relates to the technical field of beverages. When the health-care beverage is prepared, the rabdosia rubescens, the ginkgo leaves and the mulberry leaves which are wide in source are used; rabdosia rubescens, ginkgo leaves and mulberry leaves are extracted, and the prepared health-care beverage has a mixed flavor which is faint scent, pure and palatable in sourness and sweetness; rosmarinic acid in the rabdosia rubescens is compounded with flavone and phenolic acid compounds in the ginkgo leaves to generate a synergistic effect, so that the improvement effect of the ginkgo leaves on the body circulation system, especially the brain function, is enhanced, and the folium mori not only combines the tastes of the ginkgo leaves and the rabdosia rubescens, but also strengthens the effects of the ginkgo leaves and the rabdosia rubescens; the prepared health-care beverage is enhanced in antibacterial activity and throat-clearing capa