1, the general weakness of children with precordial disease, surgery should be carried out when the general condition of the child is relatively good, post-operative recovery is also faster. If there is “pneumonia”, it is better to recover for a period of time (1-2 weeks) before surgery, otherwise it will increase the risk of surgery, long post-operative 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, economic preparation: complex precordial disease should be prepared for at least 50,000-60,000. If you need cardiovascular imaging, you need to prepare at least 7,000 more, preferably 10,000. The younger the age and the more serious the condition, the more it will cost.