The timing of surgery: 1, general simple precordial diseases such as atrial defect, ventricular defect, patent ductus arteriosus, pulmonary valve stenosis, if the child is weak, surgery should be performed when the general condition of the child is relatively good, postoperative recovery is also faster. If the child has “pneumonia”, it is better to recover for a period of time (1-2 weeks) after the surgery, otherwise it will increase the risk of surgery, long recovery time and cost more. 2, preoperative repeated pneumonia, heart failure, especially in children with pulmonary hypertension, some may need to take a period of pre-operative cardiac diuretics, and the child’s general condition improved before surgery recovery faster. 3, for some more complex congenital heart disease, once the child is found after birth, immediately give the child a detailed heart examination and ask a professional pediatric cardiac surgeon to evaluate the condition, the timing of surgery for various complex congenital heart disease is different. For example, if there is no severe hypoxic attack, it is more appropriate to operate at the age of half to one year; if there is no ventricular defect, it is often necessary to perform emergency surgery 2-3 weeks after birth; otherwise, once the best time for surgery is missed, the child may face more than two surgical operations, and his life may be in danger at any time. Second, economic preparation: simple precordial diseases such as atrioventricular defect, ventricular defect, patent ductus arteriosus, pulmonary valve stenosis, the total cost is usually less than 30,000, while complex precordial diseases should be prepared for at least 50-60,000. Pre-operative cardiovascular imaging or enhanced CT may be required, and the procedure takes a long time, as well as a long post-operative recovery time, so more financial preparation is needed. In addition, the younger the age and the more severe the condition, the greater the cost.