Congenital heart disease is produced by a polygenic factor of genetic and environmental interaction. The first child with congenital heart disease, the other children, and his children in the future, have a higher chance of developing congenital heart disease than the normal population, but it is not a sure thing. Six months, preferably a year later, you can consider having another child, please bring your wife to the obstetrics and gynecology department for consultation. Both parents quit drinking and smoking before pregnancy, prevent colds, avoid rays, taking drugs, especially proprietary Chinese medicines of unknown ingredients, as well as birth control pills. Before pregnancy, go to a specialized hospital for examination to exclude infections of external reproductive organs (trichomonas, toxoplasma, common viruses). Stay away from domestic animals, especially dogs and cats. Both partners, at least the mother, should take folic acid before pregnancy. Folic acid for the mother in the second trimester of pregnancy. This will minimize the occurrence of preeclampsia. If you have a child with precocious heart disease, do not be too afraid when you have another child, it is a small probability that another child with precocious heart disease will occur.