There is no set age for children to drink milk. Generally, children can be fed formula milk until they are three years old. If the family has the conditions and the child is willing to drink milk and can tolerate it, the milk can be drunk all the time. Early in life, children are usually breastfed, and if breastmilk is insufficient, they are fed with formula; after 4 to 6 months of age, complementary foods are gradually added. Children slowly grow up, gradually transitioned to the adult diet, formula drink will slowly less, you can try to let the children drink milk. Milk contains high-quality protein, trace elements and other nutrients, can be very good to promote the growth and development of children, to maintain the child’s daily nutritional needs. If there is no discomfort and the child is willing to drink, you can always give the child to drink milk, there is no specific rules to drink until how old. However, if the child is allergic to milk, it is not recommended to give the child to drink milk.