Tetralogy of Fallot is a serious, rare and complex congenital heart disease, without medical or surgical treatment, the clinical statistics survival rate is about 25-35%, patients die naturally within 1 year of age, because of cardiac function, lung infection, brain abscess death. 50% mortality rate within 3 years of age, within 10 years of age 70% of patients with Tetralogy of Fallot die prematurely, within 30 years of age about 90% of patients die prematurely. Less than 10% survive the natural course of the disease past 30 years of age. After surgical or operative treatment, large clinical data and large centers report that the overall operative mortality rate is within 10%, with more than 90 out of 100 surviving and 10 dying during surgery or the perioperative period. After surgery, if you get through the perioperative period, the 5-year survival rate is over 90%, the 10-year survival rate is over 80%, and most patients survive for a long time. The postoperative survival mortality rate is due to right heart insufficiency as the material set inside does not grow after surgery as a child. Individuals with pulmonary valve closure insufficiency develop poor cardiac function, resulting in death. With the development of technology, the patient grows older, there is a second chance to correct the surgery, and after one surgery caused by the failure to keep up with growth and development, active postoperative observation, follow-up, and accept the advice of the doctor.