Folic acid tablets can be taken in preparation for pregnancy for the following reasons: 1. The demand for some trace elements and minerals is relatively high during female pregnancy preparation, such as vitamin A, taurine, folic acid and other trace elements, and women taking folic acid during pregnancy preparation can maintain women’s immune function and endocrine function, which can improve women’s resistance; 2. Folic acid is also necessary for the development of the fetus, and if women lack folic acid during pregnancy preparation, it may have serious adverse effects on the development of the fetus’ nervous system. If women lack folic acid during pregnancy preparation, it will have serious adverse effects on the development of the fetal nervous system, which may lead to fetal mental retardation, low neurological function, and in serious cases, anencephaly and spina bifida are common adverse consequences; 3. Proper supplementation of folic acid during pregnancy preparation can prevent miscarriage, stillbirth, fetal development disorders and other common diseases during pregnancy.