Folic acid during pregnancy can prevent anemia, prevent congenital malformations of the fetus, promote the development of the placenta and reduce insomnia in pregnant women. 1. Preventing anemia in pregnant women: women may experience various discomforts during pregnancy, and most pregnant women may also experience anemia, which can be prevented by taking folic acid in advance. 2. Prevent fetal congenital malformations: the active ingredient of folic acid can promote fetal development and prevent fetal neural tube malformation. 3. Promote the development of the placenta: the fetus needs to rely on nutrients to develop in the pregnant woman’s body, so appropriate supplementation of folic acid is helpful for the development of the placenta, but also can indirectly promote fetal growth and development. 4. Reduce insomnia in pregnant women: some patients who lack folic acid, or the body has a reduction in the level of certain specific substances, which leads to sleep disorders, supplementation of folic acid can help improve sleep. If there is any discomfort during pregnancy, it is recommended to consult a doctor in time.