If patients with Tetralogy of Fallot are treated with timely surgery, most patients live as long as normal after surgery. Tetralogy of Fallot is a congenital heart malformation caused by chronic hypoxia that requires surgical correction of the malformation through palliative surgery, radical surgery, and other procedures when the child is 4 to 5 years old. After surgery for Tetralogy of Fallot, if there is no serious lesion of the pulmonary artery, the patient can survive for a long time, and the life expectancy is not much different from normal except for the presence of physical weakness. Human life expectancy is affected by a variety of factors such as genetics, dietary structure, physical fitness, etc. The exact life expectancy of patients after Tetralogy of Fallot surgery varies from person to person. It is recommended that patients with tetralogy of Fallot be treated with surgery in a timely manner, with regular follow-up and observation after surgery, and with daily controlled exercise. It is recommended that patients seek timely medical treatment, improve the relevant examinations under the guidance of the doctor, and undergo surgical treatment as soon as possible.