The critical period for brain development is the fetal period and 1-2 years after birth. During the middle and late pregnancy, the fetal neural crest has already developed. It is recommended that pregnant mothers eat more walnuts at this time and pay attention to supplementing folic acid, vitamins and fatty acids to help the fetal brain development. At this time, pregnant mothers can also listen to more music to the fetus, which can promote the development of the non-dominant hemisphere of the brain. The period of 1-2 years after birth is also an important period for brain development, during which children are prone to learn certain knowledge and experiences that have a significant impact not only on their talent development, but also on their intellectual development, as well as on their adult demeanor patterns later in life. During this critical period of brain development, parents are advised to take care of their children on a daily basis and to communicate more with them. In addition, it is important to add a variety of complementary foods at the right age, eat more vegetables and fruits, and take vitamins to ensure a balanced daily intake of nutrients.