Congenital heart disease is the most common type of congenital malformation in children, which can be directly understood according to the name of the disease as having heart disease at the time of fetus. Congenital heart disease not only brings great pain and misfortune to the child, but also brings a heavy burden to the family. The natural recovery of congenital heart disease is divided into situations 1. simple congenital heart disease that can heal itself The chances of atrial septal defect and patent ductus arteriosus reopening once they heal themselves are very low, which is closely related to their own anatomical structure. For babies within the first month of life, if ultrasonography reveals the presence of an atrial septal defect (less than 4 mm in diameter) or/and an arteriovenous ductus arteriosus (less than 3 mm in diameter), this is usually a sign that the fetal circulation has not closed in time and will most likely close in the subsequent period of time, and the chances of self-healing are highest in such cases. 2. Membranous ventricular defect with the possibility of self-healing If the ventricular defect is large in diameter, it often has crater-like fibrous growths attached around it, or the tricuspid paravalvular valve obscures it, a condition that we call pseudoventricular septal tumor formation. In cardiac ultrasound reports, pseudoseptal tumor formation is, to some extent, an important indicator of self-healing ventricular defects, but it is not a very reliable indicator. This is because even if the pseudoseptal tumor completely covers the ventricular septum and no shunt exists, the possibility of future rupture of the septal tumor and reopening of the ventricular septum under some special circumstances cannot be excluded. On the other hand, the formation of pseudoseptal tumors depends on the involvement of the tricuspid valve, and if too much tricuspid valve tissue is involved in the formation of septal tumors, it may cause adverse complications such as tricuspid regurgitation. Depending on the severity of the disease, precordial disease can affect the growth and development of children to varying degrees, reducing resistance and threatening the lives of children with serious conditions. Moreover, the condition of some children with precardiac disease develops with age, and if left untreated, the opportunity for treatment will be lost at an advanced stage. The most prudent recommendation for precocious heart disease is early detection, early diagnosis and early treatment. The optimal timing of surgery depends on a number of factors, including the complexity of the congenital malformation, the age and weight of the child, and the general development and nutritional status of the child. Generally, for simple congenital heart, it is recommended before the age of 3, because too young, low weight, poor systemic development and nutritional status will increase the risk of surgery; too old, the heart will compensate for the increase in size, and some will even have increased pulmonary artery pressure, which will also increase the difficulty of surgery and longer recovery time after surgery. For combined pulmonary hypertension, congenital malformations that are serious and affect growth and development, malformations that threaten the life of the child, and complex malformations that require staged surgery, the earlier the surgery the better, regardless of age. For more complex congenital heart disease, surgery should be done as early as possible, but for general, the risk of surgery below 8 kg is relatively greater, if it can be done after 8 kg, the risk will be reduced a lot.