Atrial septal defect, ventricular septal defect and arteriovenous ductus arteriosus are common congenital heart diseases in children. If the child is found with feeding difficulties, poor development, frequent episodes of pneumonia and increased pulmonary artery pressure, early open-heart surgery may be considered. If the child has no abnormal development, no symptoms, and the pulmonary artery pressure is not high, interventional occlusion treatment can be considered after the child is 2-3 years old. At present, interventional blocking technology is very mature and has the advantages of low cost, fast recovery and no need for open-heart surgery. It is routinely carried out in Qilu Hospital of Shandong University, welcome to visit us!