Milk contains protein, from a nutritional point of view, the content of protein per 100ml of milk is often between 2.5-3.7g. Therefore, the content of protein in milk is still there, from another point of view, the protein in milk is also some high-quality protein, that is, the protein in milk has a complete range of amino acids, sufficient quantity, the right ratio, such protein we can call complete protein, which is often considered to be high-quality protein. Therefore, the absorption rate and utilization rate of the protein in milk are relatively high, from a nutritional point of view, the protein in milk is very important for the body to supplement protein.