Malnutrition or anemia during pregnancy, or trace elements such as folic acid, zinc, copper and manganese in early pregnancy may hinder the maturation of the fetal brain and other tissues and organs, further damaging the central nervous system and causing cerebral palsy. Therefore, from the beginning of pregnancy, pregnant women should ensure a basic daily supply of calories and try to take a balanced and reasonable diet to maintain the nutritional balance of the internal environment and ensure the health of mother and child. Folic acid is involved in the synthesis and transformation of purine and pyrimidine nucleotides in the body, and plays an important role in the production of nucleic acids (ribonucleic acid and deoxyribonucleic acid), which are necessary for the body to use sugar and amino acids. Inadequate intake of folic acid by pregnant women not only affects the length and weight of the fetus, but may also cause anemia in the newborn baby and, more seriously, fetal malformations, especially neural tube abnormalities, such as neural tube closure, anencephaly and spina bifida. Foods with high folic acid content include: plant foods such as spinach, celery, cauliflower, potatoes, lettuce, etc.; fruits such as pears, oranges, chanterelles, lemons, etc.; nuts and soybeans, animal liver, kidneys, eggs, fish, etc. 2, zinc can promote fetal growth and development and tissue regeneration, promote the appetite of pregnant mothers, enhance immune function, promote vitamin A metabolism, participate in the composition of many important enzymes in the body and other physiological functions. Zinc can maintain and keep the replication of immune response cells. Zinc deficiency in pregnant women may increase the number of complications during pregnancy and delivery, and increase the possibility of fetal asphyxia during delivery, causing the newborn baby’s brain tissue cells to be deprived of oxygen and blood, which may affect the future development of the baby’s brain and cause cerebral palsy in severe cases. The main food source of zinc is animal food, such as animal liver, meat, seafood, etc., especially oysters contain the highest zinc. 3, many studies have proved that the lack of B vitamins in pregnant women can cause mental disorders in the fetus, prone to crying, restlessness and irritability after birth, and can also cause symptoms such as weakened gastrointestinal motility, constipation, reduced secretion of digestive juices, loss of appetite, serious neurological disorders, and accelerate the early pregnancy reaction of pregnant women, making the mother’s absorption of nutrients worse, resulting in a lack of nutrition in all aspects of the fetus, thus seriously affects the development of the brain and affects the future intelligence of the fetus. B vitamins include vitamin B1, vitamin B2, vitamin B6, vitamin B12, niacin, folic acid, pantothenic acid, choline and so on. Among them, mixed grains, dry yeast, hard fruits, animal offal, eggs and lean pork are good sources of vitamin B1; liver, kidney, heart, egg yolk, eel, milk, mushrooms and purple cabbage are high in vitamin B2; foods rich in vitamin B6 include egg yolk, meat, fish, milk, whole grains, cabbage and beans.