Indications for interventional treatment of congenital heart disease I. Pulmonary valve stenosis 1. Simple pulmonary valve stenosis. 2.Echocardiography shows trans-pulmonary valve pressure difference ≥ 30 mmHg. 3.Any age can be performed. II. Arterial ductus insufficiency 1.General age >6 months and weight >4 kg. 2.Arterial ductus insufficiency of any type. III. Atrial septal defect 1.Secondary foramen ovale type atrial septal defect with defect diameter between 3 mm and 35 mm. 2.General age >2 years and weight >10 kg. 3.Echocardiography shows defect >5 mm from superior vena cava, inferior vena cava and pulmonary vein and >7 mm from atrioventricular valve. IV. Ventricular septal defect 1.Perimembranous and myocardial defects. 2, general age >2 years, weight >10kg. 3, perimembranous defect from the aortic valve 2mm. 4.If the perimembranous ventricular defect is less than 2mm from the aortic valve, it must be combined with membrane aneurysm formation. 5.The crestal ventricular defect should be less than 5mm in children and less than 8mm in adults. 5.Compound precordial disease 1.Atrial defect combined with arteriovenous ductus arteriosus, ventricular defect and pulmonary valve stenosis. 2.Ventricular defect combined with unclosed ductus arteriosus and pulmonary valve stenosis. 3, arteriovenous ductus arteriosus and pulmonary valve stenosis. VI. Aortic constriction 1. Membranous aortic constriction 2. General age >2 years, weight >10 kg. 3. Echocardiography showed a pressure difference across the aortic stenotic segment ≥20 mmHg. VII. Pulmonary arteriovenous fistula 1. Cyanosis, oxygen saturation less than 90% 2. General age >1 year, weight >10 kg. 3. Chest CT confirmed the presence of focal pulmonary arteriovenous fistula VIII. Coronary arteriovenous fistula 1. Age > 1 year, weight > 10 kg. 2. Echocardiography showed coronary artery fistula ≥ 2 mm.