Ordinary milk powder does not contain nucleotides, and infants who drink milk powder will have congenital allergies and allergic reactions, and their ability to fight infections will be weaker. This is mainly because of the lack of nucleotides in milk powder, human milk is the best nutrition for infants and young children, human milk has a large number of nucleotides, so people based on the nutrients in human milk, manufacturing infant nutrition, adding nucleotides in milk powder. This is a great help to the immune function of children, and can promote the maturation of the intestinal tract, liver growth and development, as well as lipid metabolism are very important role. For the body’s immune function, nucleotides can maintain the normal immune function of the necessary nutrients, can enhance the infant’s immunity and resistance to infection. Nucleotides have a very important role in intestinal nutrition and can promote the growth, development and repair of intestinal cells. Nucleotides are also able to reduce the incidence of infantile diarrhea. Impact on the liver, the body’s active re-synthesis of nucleotides, mainly in the liver, nucleotide re-synthesis requires a large number of calories, the remedy pathway is the nucleotide fragments or exogenous nucleotides to form a new nucleotide, which reduces the amount of energy.