The preparation before pregnancy includes physiological preparation, psychological preparation and pre-conception checkups.1. Physiological preparation: develop good living habits, regular work and rest, and avoid staying up late. The couple should stop smoking and drinking, and exercise in moderation to improve the immunity of the body and the vitality of the sperm and eggs. At the same time, attention should be paid to a balanced diet, it is advisable to eat a nutritious diet, eat more fresh fruits and vegetables, supplement trace elements, increase calcium intake, avoid exposure to radiation, toxic chemicals, etc. to avoid adverse effects; 2. psychological preparation: maintain a good, relaxed mental state, be ready for the upcoming role change, do not have a psychological burden, because when the body is in a state of tension, anxiety will affect 3. Pre-conception checkups: Women-related checkups include physical examination of the whole body, screening for infectious diseases and examination of the reproductive system, such as gynecological ultrasound, white belt routine, sex hormones, infectious diseases and other examinations. If you have vaginitis or tubal inflammation, you need to actively treat the inflammation before preparing for pregnancy. Male related examinations include semen, prostate, urinary system, etc. If the examination reveals hereditary diseases or uncorrectable genital malformations, fertility needs to be postponed. In addition, women taking short-acting oral contraceptives need to prepare for pregnancy 1 month after stopping the pill, and attention should be paid to folic acid supplementation in the first 3 months of pregnancy to prevent fetal neural tube abnormalities.