The way to have a child is to choose a few days before and after ovulation to have intercourse, at the same time for the sake of eugenics, it is recommended that both husband and wife to carry out a good preparation for pregnancy, do a good pre-pregnancy examination. Generally speaking, before preparing for pregnancy, both parties are recommended to do routine blood tests to see if there are any infectious diseases and abnormalities in liver and kidney function, while men should do semen tests to rule out whether there is dead sperm or weak sperm. Women need to undergo gynecological examination, sex hormone six tests and ultrasound to see if there are other factors that affect pregnancy. During the preparation period, you can choose to have intercourse five days before ovulation and four days after the day of ovulation and ovulation to have a higher chance of pregnancy, and after intercourse, you can appropriately elevate the buttocks to avoid semen flow. Planning to have a child need to prepare in advance, a few days before and after the ovulation period, the chances of pregnancy, regular sex time more than 1 year, if not pregnant, you need to go to the hospital in a timely manner.