The present invention relates to a dairy product containing functional alginic acid beads, comprising a composition containing 1-10 wt% of alginic acid beads on the basis of the weight of a dairy product, wherein the alginic acid beads are formed by drop-molding a mixture solution comprising 0.5-15.0 wt% of a functional material comprising any one selected from vitamin C, vitamin E, iron, omega 3 and water-soluble dietary fibers or a combination thereof, 25.0-45.0 wt% of refined sugar, 0.5-2.0 wt% of sodium alginate, 0.001-0.1 wt% of a grapefruit seed extract, 0.5-1.5 wt% of a natural dye, and 37.0-60.0 wt% of purified water to 1.0-5.0 wt% of a calcium lactate solution, and a preparation method thereof. According to the present invention, since alginic acid beads containing a functional dietary fiber material are in themselves contained, and a functional material is contained in beads which is visible to the naked eye, a consumer is simultaneously provided with visual and nutritional satisfaction. Thus, balanced nutrition is provided to children, the old, to whom the consumption of dairy products is recommended, and the young, who prefer trendy beverages, and in particular, it is possible to contribute to the prevention of child obesity, which has recently been increasing. Further, it is possible to enhance the profits of livestock farmers and the health of the public by promoting the consumption of dairy products, and to maximize the functionality and nutrition of a dairy product by fundamentally solving a deficiency in dietary fiber content, which is the shortcoming of the dairy product.La présente invention porte sur un produit laitier contenant des billes dacide alginique fonctionnelles, comprenant une composition contenant 1-10 % en poids de billes dacide alginique sur la base du poids dun produit laitier, les billes dacide alginique étant formées par moulage par chute dune solution de mélange, comprenant 0,5-15,0 % en poids dune substance fonctionnelle compren
