Congenital heart disease (congenital heart disease) is one of the common congenital anomalies in children. About 7‰-11‰ of babies born in China each year have congenital cardiovascular anomalies, mostly seen as ventricular and ventricular septal defects, patent ductus arteriosus, pulmonary valve, aortic valve stenosis and tetralogy of Fallot, large vessel misalignment, etc. About 1/2 of the children with precordial disease die within the first year of life due to severe cardiac anomalies. Survivors are prone to recurrent respiratory infections, growth retardation, and poor physical strength at all ages of their growth and development. If left untreated, they will eventually lead to pulmonary hypertension, heart enlargement, heart failure, and in some cases, life-threatening complications of endocarditis, embolism, hemorrhage, and hypertension. According to the data, precardiac disease has now taken the 2nd to 4th place in the causes of infant mortality. Precocious heart disease is mostly caused by genetic, environmental and certain drugs taken during pregnancy. With timely diagnosis and early surgical treatment, most of them can be cured and can live and work like normal people after surgery. However, many children with precocious heart disease delay seeking medical attention for various reasons, so that the condition has reached an advanced stage, or completely lost the opportunity to operate, or complicate the cardiopulmonary insufficiency, making the operation more difficult and risky, thus also multiplying the cost of treatment. As for the age at which surgery is most appropriate, it is determined by the type of precocious heart disease and the early and late appearance of symptoms. If the condition requires it, such as severe malformation, early onset of symptoms, recurrent heart failure, endocarditis, and life-threatening conditions, surgery can be performed as early as possible regardless of age. Parents should take their children to the hospital as soon as possible to check the nature and degree of heart malformation and let the specialist decide the appropriate age for surgery.