Indications for interventional treatment of patent ductus arteriosus 1. Left-to-right shunt of patent ductus arteriosus, not combined with other cardiac malformations requiring surgery; ductus arteriosus diameter of 1 mm or more, age ≥ 6 months, weight ≥ 4 kg. 2. Presence of residual shunt after surgery of patent ductus arteriosus. Interventional indications for atrial septal defect 1. Age 3 years or older. 2. Secondary foramen ovale left-to-right shunt type atrial septal defect, 5mm-36mm in diameter, with enlarged right ventricle and right atrium. 3. The distance from the edge of the defect to the coronary sinus, superior vena cava, inferior vena cava and pulmonary veins is ≥5 mm, and to the atrioventricular valve is ≥7 mm. 4. The septal extension diameter is larger than the diameter of the atrial septal defect +14 mm. 5. No other cardiac malformation requiring surgery. Interventional indications for ventricular septal defect 1, perimembranous ventricular septal defect: age ≥ 3 years, distance from the upper edge of the defect to the right aortic coronary valve > 1,5mm No right aortic coronary valve prolapse obscuring the defect opening and aortic regurgitation, distance from the defect edge to the tricuspid valve > 1,5mm. 2, myocardial ventricular septal defect: diameter of the right ventricular surface > 2mm with left ventricular enlargement. 3.Intra-tunnel ventricular septal defect: the distance of the defect stump from the pulmonary valve >3mm, and the distance from the junction of the right coronary, left coronary and noncoronary valves >2mm, with varying degrees of left ventricular enlargement. 4. Presence of residual shunt after surgery for perimembranous or myocardial ventricular septal defect. Indications for interventional treatment of pulmonary valve stenosis 1, typical pulmonary valve stenosis, trans-pulmonary valve pressure difference PG ≥ 30 mmHg, best age 2-4 years. 2. Severe neonatal pulmonary stenosis. 3. Severe pulmonary stenosis with right-to-left shunt at atrial level. 4. Mild to moderate dysplastic pulmonary stenosis. 5. Pulmonary stenosis with congenital heart disease such as patent ductus arteriosus, secondary foramen ovale septal defect or ventricular septal defect, which can be treated by intervention at the same time.