Fuente: WIPO "dairy products" The invention provides a dairy product and a preparation method thereof. Based on the total weight of the dairy product, the dairy product comprises the following raw materials in parts by weight: 30-90 parts of milk, 5-10 parts of whey protein powder, 3-6 parts of sugar, 0.1-0.5 parts of a casein hydrolysate, 0.05-0.5 parts of taurine, 0.05-0.5 parts of lactase, 0.05-0.3 parts of an emulsifier, 0.05-0.2 parts of a stabilizing agent, 0.03-0.1 parts of a thickening agent, 0.1-0.55 parts of a nutrient, 0.01-0.05 parts of sodium chloride, 0-1 parts of an acidity conditioning agent, and water. The dairy product has at least one of the following advantages: abundant nutrition, good stability, and reduced incidence rate of lactose intolerance.