The indications for left ventricular double outlet surgery are the same as those for right ventricular double outlet, and all cases should be treated surgically if the diagnosis is clear. In cases of infants and children with pulmonary congestion, early surgery or pulmonary artery cricothyrotomy is recommended. In cases with pulmonary artery stenosis and pulmonary ischemia, body-pulmonary bypass should be performed first, followed by corrective surgery with an extracardiac catheter. However, if severe pulmonary vascular obstructive lesions have occurred, surgery is contraindicated. Radical surgery method: The surgery is performed through a median sternotomy, under extracorporeal circulation combined with hypothermia, depending on the location of the ventricular septal defect and the presence or absence of pulmonary stenosis: 1. The ventricular septal defect is located under the pulmonary valve and there is no pulmonary stenosis: the right ventricular incision is made, and a patch is used to form an internal tunnel to connect the pulmonary artery with the right ventricle. If combined with pulmonary artery stenosis, the stenosis must be released. If needed, orthopedic outflow tract enlargement is performed. 2.Ventricular septal defect located under the aortic valve with or without pulmonary artery stenosis: through the right ventricular incision, the patch is used to close the ventricular septal defect, close the pulmonary valve orifice or suture the proximal pulmonary artery, and apply an extracardiac catheter with a valve to connect the right ventricle with the pulmonary artery. 3.Close the ventricular septal defect and simultaneously enlarge the right ventricular outflow tract. 4.Close the ventricular septal defect, suture the pulmonary valve, remove the hypertrophic muscle of the funnel, reconstruct the right ventricular outflow tract by patching, and implant an artificial valve in the pulmonary artery.