Generally breastmilk is rich in DHA, so breastfed babies can do without additional DHA supplementation. If babies are artificially fed, DNA can be added early. DHA is an important part of phospholipids in brain cell membranes, from birth to two years old is an important period of brain development, DNA is not only involved in the development of the central nervous system, and is related to the maturation of retinal photoreceptor cells, timely supplementation of DHA can effectively promote the stable development of the brain and vision. After the birth of the baby as much as possible breastfeeding, breast milk is rich in a large number of DHA, choose artificial feeding as much as possible to choose DHA-containing milk powder. After the baby added complementary food, you can choose deep sea fish, flaxseed oil food supplement. Generally after birth can be supplemented by 100 mg of DNA per day, until two years old. The time and dosage of DHA supplementation for babies, it is recommended to visit the hospital, according to the child’s birth history and development, and follow the doctor’s instructions for supplementation.