Pure milk is not recommended for babies under one year of age, especially for babies with poor intestinal function, which is likely to lead to diarrhea, constipation, indigestion and other adverse reactions. After one year of age, the baby, according to the complementary food to determine whether you can drink pure milk. Pure milk is rich in protein and calcium, which can provide the baby’s body with the energy it needs, and generally speaking, you can drink pure milk directly after one year of age. But it also depends on the baby’s complementary food, if the baby complementary food is balanced, nutrition is comprehensive, then you can drink pure milk, as ordinary food. But if the baby is picky about food and partiality, then it is best to continue to drink formula, which can better meet the baby’s daily nutrition.