It is generally recommended to take folic acid for pregnancy until the third trimester, which is about 12 weeks. The purpose of taking folic acid before and during early pregnancy is to prevent malformations in fetal neural tube development. During early pregnancy, it is recommended to take folic acid once a day, 0.4 mg at a time, until about the third trimester of pregnancy. After the third trimester, folic acid can be discontinued and replaced with a multivitamin containing folic acid. After pregnancy, the nutrition that needs to be consumed is increased because one eats and the pregnant woman and the baby consume both. And pregnant women are deficient in many elements. It is recommended that pregnant women should pay attention to nutrition, correct iron and calcium deficiency, and pay attention to multivitamins and trace elements.