A whitening nutritional beverage capable of moisturizing the skin and a preparation method thereof of the present invention mainly comprise the following proportions by weight of 180-220 wax gourd, 3-6 white fungus, 90-110 carrot, 40-55 barley, and 20-20 jujube 25, made from Ginger 2‑4, Angelica dahurica 10‑20, Huang Shi 8‑12 and Luo Han Guo extract 18‑22. The resulting product has a moderate proportion of taste, which is helpful for skin whitening and moisturizing, and can also inhibit the formation of melanin, play a role in beautifying from the inside out, resist oxidation, repair damaged liver cells, detoxify, and promote collagen formation. The skin is smooth, whitening, elastic, blackening and spot removal are obvious, it can increase skin gloss, increase skin cell activity, improve metabolism, inhibit the production of melanin, promote the discharge of melanin, increase the amount of skin collagen, elastin, and hyaluronic acid Increases and enhances skin suppleness and elasticity.