The invention relates to the field of skin care products, and relates to a whitening cream formula and a preparation method thereof. The formula is composed of group A, group B, group C and group D, wherein the group A comprises, by weight, 100 g of green bean starch, 50 g of rhizoma typhonii, 50 g of tubers of hyacinth bletilla, 50 g of radix ampelopsis, 50 g of died silkworms, 50 g of dried roots of radix angelicae, 50 g of trichosanthes roots, 25 g of castanopsis kansuensis, 25 g of sweet grass, 10 g of holy basil, 10 g of roots of saposhnikovia divaricata, 10 g of ligusticum sinense, 5 g of gymnocladus chinensis, 15-20 g of phellinus linteus extracts, 8-12 g of extracts of dried rhizomes of liquorice, 3-7 g of adenosine liposome, 5-9 g of hyaluronic acid, and 1-5 g of arbutin; the group B comprises, by weight, 10-15 g of buxus Chinensis, 6-10 g of apricot kernel oil, 3-7 g of cod-liver oil and 3-7 g of camellia oil ; the group C comprises, by weight, 3.5-4 g of wax emulsion and 3-3.5 g of GOE; the group D comprises, by weight, 1-3 g of vitamin E, 1-3 g of a natural preservative, 3-8 g of lavender essential oil, 3-8 g of rose essential oil, 3-9 g of geranium essential oil and 1-3 g of mint essential oil. The method comprises the steps that materials in the group A and group B are heated respectively, mixed and stirred, materials in the group D and group C are added, uniformly mixed and placed into a container. The whitening cream formula has the advantages of simple production and capable of whitening the skin.