Congenital heart disease is an abbreviation for congenital heart disease. A normal heart is divided into left and right atria and left and right ventricles. The left atrium receives fresh blood (highly oxygenated blood) from the lungs and sends it throughout the body via the left ventricle and the aorta. Venous blood (low-oxygen blood) from the superior and inferior vena cava flows back through the right atrium, right ventricle, and pulmonary artery to the lungs for gas exchange (expelling carbon dioxide and receiving oxygen), then back to the left atrium, and so on and so forth. The heart receives venous blood back and pumps arterial blood out to supply the whole body. The fetal heart is developed early in the mother’s pregnancy (within 2 months). If the cardiovascular malformations caused by abnormal or impaired cardiovascular development during fetal life. The incidence of congenital cardiovascular disease is reported abroad as 7-10 per 1,000 live births, and in China it is about 7-8 per 1,000, that is, for every 1,000 babies born, there are 8 with congenital heart disease.