The invention discloses a preparation method of a fermented rice milk beverage for maintaining beauty and keeping young. The preparation method includes the following steps: cleaning gingers, mulberryleaves, dandelions, common bletilla rubbers, dahurian angelica roots, radix gentianae, pomelo peels, grape seeds, raspberries and cerasus humilis, shredding the cleaned materials, adding water and color-protecting agents into the shredded materials, beating the mixture into pulp, carrying out heat preservation and filtering, standing the filtered pulp, and extracting supernatant, thereby obtaining compound traditional Chinese medicine juice; roasting rice, black rice, black sesame seeds, red beans, coix seeds, corn kernels and ginkgo seeds, crushing the roasted materials, soaking the crushedmaterials in water, carrying out pulp grinding and gelatinization, adding cellulase, lipase and protease, carrying out heat preservation, adding xylanase, carrying out heat preservation, adding amylase for liquefaction, adding glucoamylase for saccharification, carrying out filtering, adding skimmed milk powder and brown sugar, and evenly mixing the mixture, thereby obtaining rice pulp; shreddinglily bulbs, common yam rhizomes, carrots, cucumbers and tremella, mixing the shredded materials, steaming the mixture, and beating the steamed mixture into pulp, thereby obtaining a pulp material; andmixing the pulp material with the compound traditional Chinese medicine juice and the rice pulp, sterilizing the mixture, adding fermentation microbial inoculum for fermentation, adding additives, carrying out homogenizing and ultrasonic processing, and refrigerating the finished products.