Under normal circumstances, if the child has no lactose intolerance, it is recommended to drink ordinary fresh milk. There are two kinds of pure milk in the market, one is the milk packed with Tetra Pak bricks with a long shelf life, and the other is the fresh milk with a shelf life of less than one week in the refrigerator. For children, if they want to eat more nutrients, such as protein, it is recommended to choose milk with a shelf life of 4-7 days in the freezer. Because the disinfection temperature is relatively low, the nutrients are relatively preserved. Tetra Pak brick-packed milk is more suitable for long-term storage at home because of its long shelf life, but because of the high disinfection temperature, the preservation of nutrients is slightly lost. For children with lactose intolerance, it is recommended to choose Shuhua milk, because removing lactose will not cause gastrointestinal discomfort, and you can also enjoy high-quality protein and calcium in milk. Obese children are advised to choose low-fat or skim milk, or when children eat a large amount of milk, it is recommended to choose skim or low-fat milk. For many milk drinks sold in the market, such as breakfast milk or children's milk specially formulated for children, it is generally not recommended for children to drink breakfast milk because there will be more ingredients added in it, but the actual milk content is not high. In order to arouse children's interest, children's milk will be a little sweet when added with fruit juice, or added with vitamins A and D or fortified with calcium and iron. It is not recommended for children to drink it every day. Because the milk is too sweet, children drink it for a long time. After getting used to this taste, they may not be able to accept other unsweetened milk or unsweetened food, which is not good for children's taste cultivation and tooth protection. Therefore, it is recommended that children choose fresh milk to drink.