4-year-old children generally drink plain milk, yogurt and so on is better. 4-year-old children are in the golden period of growth and development, the diet needs to be diversified, in addition to the usual diet, can be appropriate to add dairy products, generally recommended to drink pure milk. Pure milk to raw cow’s milk as raw materials, no other added ingredients, containing high-quality protein, fat, calcium, vitamins and other nutrients, easy to digest and absorb, therefore, 4-year-old children drink pure milk better. In addition to pure milk, 4-year-old children can also be appropriate to drink low-sugar sour milk, sour milk in the production process, more or less will add some probiotics, these probiotics are conducive to the stability of the intestinal flora, and sour milk in the calcium content is also higher. Pure milk and sour milk are complementary foods, 4-year-old children daily diet should pay attention to balanced nutrition, eat more vegetables, eat fruits in moderation, add meat products, eggs and other foods to ensure the growth and development of the baby. Need to pay attention to not give the child to drink a variety of fruit-flavored milk, flavored yogurt, etc., this kind of dairy products contain a lot of sugar and additives, is not conducive to the child’s health.