Fallot’s tetralogy of Fallot is one of the most common congenital cardiac malformations, with 3.6 cases per 10,000 births, accounting for 12-14% of congenital organ disease and the first of the cyanotic cardiac malformations, accounting for 50%-90% of cases. In 1954, Lillehei performed the first successful intracardiac procedure for Fallot’s tetralogy with controlled cross circulation and direct visualization. The two main anatomic anomalies of tetralogy, right ventricular outflow tract stenosis and ventricular septal defect, are quite variable. Right ventricular outflow tract stenosis can be located in the funnel, the pulmonary valve, the pulmonary valve annulus, the main pulmonary artery or the pulmonary artery branches, and in some cases, stenosis can be present in both. In tetralogy of Fallot, the embryonic developmental disorder is due to the incomplete development of the distal segment of the pulmonary cone or the funnel of the right ventricle without inversion, so that the aortic valve remains in its embryonic position to the right of the pulmonary valve and the funnel septum, or wall bundle, travels backward and downward to the right during normal development. This results in right ventricular outflow tract stenosis when the proximal segment of the conus fuses with the heart. This results in a large ventricular septal defect behind the superior ventricular crest, which is the funnel septum. The right ventricular outflow tract will have symptoms such as congestion, tamponade, aortic misalignment, ductus arteriosus, decreased arterial oxygen saturation, cyanosis, pulmonary atresia, pulmonary stenosis, dyspnea, hemoptysis, cerebral abscess hemiplegia, water loss ventricular septal defect systolic murmur heart failure, ventricular hypertrophy, cardiac malformation, blood hypoxia, right ventricular outflow tract, tremor, cyanosis, left ventricular hypertrophy, etc. Symptoms should be detected promptly at hospital for confirmation of diagnosis.