Pre-conception examinations for men and women can be done in eugenics, fertility, obstetrics and gynecology and urology. 1. Eugenics: Eugenics examines whether men and women have some genetic diseases, which can avoid birth defects, and it is a specialized department for fertility. 2. Reproductive medicine: Reproductive medicine can examine the male and female reproductive organs, understand the function of reproductive organs, and treat infertility to improve the chances of conception, if there is no eugenics department in the hospital, you can also go to the reproductive medicine department. 3. Obstetrics and gynecology and urology: for some more remote areas, the level is lower, there is no eugenics and reproductive department, women can go to the obstetrics and gynecology, men can go to the urology department to carry out some basic checks. Pre-conception examination is more important, it is recommended that couples preparing for childbearing actively check, before the examination should pay attention to abstinence from sex for 3-7 days, women should avoid menstruation before the pre-conception examination, do not drink alcohol before the physical examination. Couples preparing for pregnancy are advised to take oral folic acid as prescribed by the doctor.