The invention relates to a grain drink with the functions of face care and beautifying and a preparation method thereof. The grain drink is made from 41.73-45.75% of Chinese date, 20.87-22.88% of lotus seed, 3.9-4.1% of collagen, 1.02-1.21% of soybean isoflavone, 0.6-0.8% of Beta-carotene, 5.3-7.5% of brown sugar, 22.16-24.36% of white sugar, 0.05-0.07% of vitamin E, and 0.14-0.16% of citric acid. The preparation process of the grain drink comprises the following steps: the Chinese date and the lotus seed are added with water and decocted twice for 2 hours each time, wherein, the water is 10 times and 8 times of the Chinese date and the lotus seed respectively; the decoction is filtered, and kept standing for 12 hours, then supernatant is obtained and condensed to a clean paste with 1.08-1.10 relative density (measured at the temperature of 55 DEG C); the clean paste is dried by spraying and made into dry paste powder; the brown sugar, the white sugar, the collagen, the soybean isoflavone, the citric acid, the Beta-carotene, and the vitamin E are crushed into fine powder, sieved by a 100-mesh sieve, and evenly mixed with the dry paste powder, and the mixture is made into grains by 85% ethanol, and the grain drink is obtained by drying the grains. The grain drink with the functions of face care and beautifying combines a plurality of natural nutrients which are compatible with each other, and has the efficacies of invigorating qi and enriching the blood, nourishing the heart to calm the nerves, and tonifying and beautifying. The grain drink improves cutaneous microcirculation, promotes cutaneous metabolism, and supplements rich nutrition for the skin by supplementing collagen required by the skin, and promotes the excretion of toxin in human body by adjusting gastrointestinal functions of human body, thus achieving the functions of beautifying and health care as well as anti-aging. The grain drink has the advantages of quick action, good effect, low cost, etc.