Optionally added nutrients in infant formula (1 stage) include: choline, inositol, taurine, L-carnitine, docosahexaenoic acid, eicosatetraenoic acid, galacto-oligosaccharides, fructooligosaccharides, fructooligosaccharides, polydextrose, 2-palmitate triglycerides, lutein, nucleotides, lactoferrin, casein calcium peptides and casein phosphopeptides and monomeric amino acids such as L-cystine, L-histidine, L-leucine, L-methionine, L-phenylalanine, L-tryptophan and L-tyrosine. In addition, infant formula milk powder can be added to animal bifidobacteria, bifidobacterium lactobacillus lactobacillus, lactobacillus rhamnosus, lactobacillus isis, fermented lactobacillus, bifidobacterium breve and other probiotics. The nutrients that can be optionally added in the formula of larger infant and young children (2 and 3 segments) include: choline, inositol, taurine, L-carnitine, docosahexaenoic acid, eicosatryonic acid, galacto-oligosaccharides, fructooligosaccharides, polyfructosaccharides, polydextrose, 2-palmitate triglycerides, lutein, nucleotides, lactoferrin, casein calcium peptides and casein phosphopeptides, selenium, manganese and yeast β-dextran, etc., more selenium, manganese and yeast β-dextran than infant formula milk powder. In addition, larger infant and young children's formula milk powder can be added to the animal bifidobacterium, bifidobacterium lactobacillus, lactobacillus rhamnosus, lactobacillus isis, fermented lactobacillus, bifidobacterium breve and acidophilus Lactobacillus acidophilus and other probiotics, more yeast β-dextran than infant formula milk powder.