Before having a child, both men and women should undergo health checkups. The common checkups for both men and women include the four eugenics tests, infectious disease tests, routine blood tests, blood type tests, liver function and kidney function tests, as well as blood sugar and lipid tests. The male partner undergoes routine semen examination, and the female partner’s examination includes routine white belt examination, mycoplasma and chlamydia examination, cervical cancer screening, as well as ultrasound examination of uterine adnexa and other examinations. If there is no abnormality in the examination of both men and women, proper physical exercise should be carried out to strengthen the body’s resistance, both men and women should quit smoking and abstain from alcohol, and the female partner should take oral folic acid 3 months in advance before preparing for pregnancy.