Pregnancy is a complex physiological process, and before preparing for pregnancy, couples can undergo a physical examination. To ensure that there is no problem with fertility, they can promote pregnancy through regular sex life, lifestyle adjustment and folic acid supplementation. It is recommended that couples relax, as too much anxiety can also affect the arrival of the baby.1. Physical examination: Before preparing for pregnancy, couples can go to the hospital for relevant examinations in order to confirm that there are no fertility problems in their bodies. In addition to common blood and urine tests, the male partner needs to undergo semen examination and urinary system examination, while the female partner needs to undergo tubal, sex hormone six and other related tests. 2. Regular sex life: Under the premise of ensuring good health, it is recommended that both partners have unprotected and regular sex before and after ovulation, that is, three days before and one day after the ovulation period. For women with regular menstruation, ovulation is usually calculated 14 days before the next menstrual period. If you have irregular periods, you can go to the hospital for ultrasound monitoring of ovulation or use ovulation test strips, etc. to monitor ovulation. Because the sperm survives in the female reproductive organs for 72 hours, while the egg only survives for 24 hours after discharge, so having sex during this time can improve the chances of pregnancy; 3. Adjust your lifestyle: both parties should develop regular habits, such as scientific diet, regular rest and rest, and eat more green and healthy foods, such as spinach and oranges. At the same time, avoid staying up late, quit smoking and drinking, relax and reduce the pressure of life and work in order to increase the chances of pregnancy; 4, folic acid supplementation: under the guidance of a professional doctor, you can start folic acid supplementation from three months before the preparation for pregnancy, you can take folic acid tablets alone or multivitamins.