From the fetal stage, the brain is in a period of rapid development, and after the baby is born, the brain continues to develop rapidly, and up to the age of 3 is a very critical stage of brain development. The intelligence of babies is not only affected by genetics, but also by nutrition and other factors. Reasonable feeding is conducive to the development of the baby’s brain to provide adequate nutrition for the baby’s intelligence. 1, nutrition in the fetal period Nutrition during pregnancy is very important to the fetus, in addition to attention to a balanced diet, meat and vegetables, it is worthwhile to pay attention to the pregnancy should pay attention to high-quality protein, DHA, folic acid, iron, zinc, iodine and other nutrients intake. 2, infant nutrition After the birth of the baby, try to breastfeeding, breastfeeding is conducive to reducing the chances of the baby’s disease, but also able to enough for the baby’s intelligence. Breastfeeding mothers also need to pay attention to their own diet, daily intake of 300 mg of DHA, can continue to supplement the complex multivitamin to prevent micronutrient deficiencies. If the mother can not guarantee sufficient intake of DHA, you can give infants and young children a daily supplement of 100 mg of DHA. After 6 months, timely to the baby to add iron, zinc, protein-rich complementary foods. The principle of adding complementary foods should be from one to many, from less to more, from thin to thick, from fine to coarse, and add them in a gradual manner, so don’t be too hasty. It is recommended to first contain iron fortification of rice flour, rice flour added about 10 days before adding vegetable puree, you can choose root vegetables, such as carrot puree, pumpkin puree, and so on. After 7 months, it is the high prevalence stage of iron deficiency anemia, and persistent iron deficiency may affect your baby’s brain development. Meat, liver, and blood products are good supplemental foods with high iron content. Babies over 1 year old should eat 1 egg per day, 30~50g of animal food, 1~2 times per week of animal liver or animal blood, 1~2 times of fish and shrimp or chicken and duck, 3~4 times of red meat (pork, beef, mutton, etc.), about 100g of cereal, about 150g of vegetables and fruits, and 20g of vegetable oil. the food should be a little bit soft, light and less salt. Warm tips: babies should also insist on drinking milk after adding complementary foods. If possible, advocate breastfeeding until 2 years old. Babies who can not continue breastfeeding should be guaranteed to drink 500 ml of formula milk every day.