Preparation for pregnancy usually takes 3-6 months in advance. Preparing for pregnancy can regulate the physical condition of both men and women to a certain extent, and improve the chances and quality of pregnancy. The specific preparation time should be decided according to the individual’s physique and physical condition. If both men and women are in relatively good physical condition, they can abstain from smoking and alcohol for about 3 months in advance, adjust their work routine and eat reasonably. During this period, the woman can take folic acid and ovulation monitoring under the guidance of a physician. If both men and women are not in good health, the preparation time should be relatively longer, 3-6 months in advance for physical conditioning. When preparing for pregnancy, women can take oral folic acid about 3 months in advance under the guidance of a doctor to prevent fetal neural tube defects. If there is the use of long-acting contraceptive pill contraception, after stopping the pill, it is best to prepare for pregnancy after an interval of 6 months. During the preparation for pregnancy, the woman should have a TORCH test before pregnancy to make sure that there is no pathogenic microorganism infection that will affect the fetus. Both parties should relax, avoid excessive tension, according to their own situation, under the guidance of the physician for reasonable preparation for pregnancy.