Folic acid tablets can be taken during pregnancy and are, in principle, mandatory during the first trimester. Folic acid tablets are a very important nutrient for mothers and babies, and mothers should start taking folic acid supplements when they are ready to get pregnant, and should take them routinely until the first trimester of pregnancy. Folic acid supplementation after pregnancy can prevent neural tube defects that may occur during the baby’s development due to folic acid deficiency. It can also prevent the occurrence of congenital heart disease, and is useful in preventing developmental deformities such as cleft lip and cleft palate in babies. In addition, proper supplementation of folic acid tablets can prevent the occurrence of megaloblastic anemia and H-type hypertension in baby mothers during pregnancy.