There are risks associated with pregnancy and delivery with heart disease. First of all, the patient should clarify whether the heart disease is congenital or acquired. If the patient has congenital heart disease, which has been treated surgically prior to pregnancy, and all heart functions are normal, pregnancy can be monitored after evaluation by an internist and obstetrician. If the patient has acquired heart disease or incurable congenital heart disease and has problems with tests related to cardiac function, pregnancy is temporarily unsuitable. Patients with heart disease should always be evaluated by a joint obstetrician/gynecologist, and cardiologist before deciding whether pregnancy is appropriate. This is because the fetus in the womb will increase the oxygen consumption of the tissues and organs of the pregnant woman after pregnancy, and the compensatory mechanism of the body will increase the amount of work done by the heart, thus increasing the burden on the heart. If the heart function of heart disease patients cannot meet the needs of the organism, it will increase the risk of pregnancy, which can cause heart failure and risk of sudden death in serious cases. Women with heart disease are advised to choose their pregnancies carefully and to make sure that they always have a maternity check-up after pregnancy and terminate the pregnancy if necessary.