Interventional occlusion of ventricular septal defect (ventricular defect for short) is mainly aimed at perimembranous and myocardial ventricular defect occlusion. The indications for perimembranous ventricular defect occlusion include: 1) diameter of ventricular defect: (1) the diameter of the left ventricular surface of the ventricular defect is 2-20 mm, generally ≤10 mm in pediatric patients; (2) for patients with membrane aneurysm, the diameter of the right ventricular surface outlet of the ventricular defect is more closely related to whether the ventricular defect can be occluded, and the diameter of the right ventricular surface outlet of the ventricular defect should be ≤10 mm; (3) for patients without membrane aneurysm, the diameter of the left ventricular surface of the ventricular defect and the distance from the ventricular defect to the aortic valve are mainly referred to. (3) without membrane aneurysm, the main reference is the diameter of the left ventricular surface of the ventricular defect and the diameter of the ventricular defect to the aortic valve: if the distance from the ventricular defect to the right coronary valve is >2 mm, the diameter of the left ventricular surface of the ventricular defect should be ≤12 mm; if the distance from the ventricular defect to the right coronary valve of the aorta is ≤2 mm, the diameter of the left ventricular surface of the ventricular defect should be <10 mm. 2.Distance from the defect to the right coronary valve of the aorta: eccentric blocker is used for the distance >1,5mm, and symmetric blocker is used for the distance >2mm. 3.Distance from the defect to the tricuspid valve: eccentric blocker ≥2mm, symmetric blocker >1,5mm, without obvious tricuspid valve abnormalities and moderate tricuspid regurgitation. 4, combined with other cardiovascular malformations that can be intervened. 5.Meet the above conditions of postoperative residual leak of ventricular defect. 6.Age >3 years old, weight >10kg. 7.Pulmonary artery systolic pressure <70mmHg, left-to-right shunt predominant. If you still have a ventricular septal defect and intend to do interventional treatment, you can refer to the above indications to see if you are suitable for interventional treatment, and if there are other questions, you can choose to consult with me by phone for one-on-one communication.