Both men and women can take folic acid. During pregnancy preparation, women must take folic acid as prescribed by their doctors, but it is not mandatory for the male partner to take it. Folic acid is a water-soluble B vitamin whose main effect is to avoid fetal neural tube malformation. In addition, folic acid helps the formation of hemoglobin and prevents anemia in pregnant women. It is recommended that women start taking folic acid supplements 3 months before preparing for pregnancy, and it is best to continue taking folic acid supplements for 3 months after pregnancy. It is not mandatory for men to take folic acid, although there is no harm in men taking it afterwards. However, during the preparation period, men need to abstain from smoking and alcohol, refrain from exposure to X-rays, and take appropriate zinc and selenium supplements to enhance sperm activity and vitality and improve sperm quality, and can consume foods containing more zinc such as eggs, beef, lamb chops and pork. Before preparing for pregnancy, it is recommended that both men and women go to the hospital for pre-conception eugenics checkups, eat a reasonable diet in daily life and do not eat cold, spicy and stimulating foods. Maintain a regular life, ensure enough sleep, improve physical resistance through appropriate exercise, and do not have psychological stress to ensure conception in the best physical condition.