Breast milk or infant formula is best for 1-year-old babies, and for milk, whole milk is recommended. Generally speaking, it is recommended that 1-year-old babies continue to be breastfed. For those who are not breastfed enough or have no breastmilk left, a formula suitable for the age of the toddler should be used as a substitute. Formula is a fortified food of milk and added with a variety of trace elements, such as vitamin D, iron, zinc, DHA, folic acid, lecithin, iodine, etc. It can provide balanced nutrients for babies and promote physical and intellectual development. Babies over the age of 1 can drink milk, but to drink whole milk, because this age of the baby growth and development of vigorous, high nutritional needs, whole milk contains energy, vitamin A and vitamin D, can better meet the nutritional needs of the baby. 2 years old before should drink whole milk, 2 years old can be considered after the low-fat or skimmed milk. In addition, the mineral content of milk is high, the baby is not easy to absorb, parents feed the baby milk, the amount should not be too much at a time, so as not to cause abdominal pain, diarrhea, indigestion and other gastrointestinal symptoms.