Congenital ventricular septal defect is one of the most common congenital heart diseases, which is commonly known as a defect in the ventricular septum. The pathophysiology caused by this defect is that part of the intraventricular blood flow flows from the left ventricle to the right ventricle, then from the right ventricle to the pulmonary circulation, and then back to the left ventricle, which commonly means that part of the ineffective blood flow is short-circuited between the left ventricle-right ventricle-pulmonary circulation, which will cause the functional burden of the left and right ventricles (mainly the left ventricle) and the burden of the blood vessels of the pulmonary circulation, which will cause heart failure and pulmonary hypertension after a long time, and these two are vicious circle of mutual influence. Clinical performance of these children after birth in the process of raising many of them can develop and grow as normal children, the recommendations are: 1, feeding process to increase nutrition; 2, usually must prevent colds and pneumonia; 3, it is recommended that these children in 6 months need to go to the local unit that can carry out the treatment of congenital heart disease review; 4, generally these children with good growth and development of congenital ventricular septal defect, most of the domestic The view of cardiology centers is that if the ventricular defect does not heal itself before the age of 2-3 years, it is recommended to receive surgical treatment, which can be minimally invasive endosurgery or traditional extracorporeal circulation surgery, which of course depends on the size, number and location of the ventricular defect. For families, if the ventricular septal defect is membranous or muscular, a minimally invasive approach can be considered if the size of the defect is less than 0.6 cm. If the ventricular defect is membranous but has a sieve-like multistrand shunt, traditional extracorporeal circulation is currently recommended because of the limitations of minimally invasive occluders. It is also important to mention here that if the ventricular defect is located under the aortic valve or under the pulmonary valve, the child can only be treated with traditional extracorporeal circulation surgery. If the size of the ventricular septal defect is 0.7 cm or larger, i.e., a non-restrictive ventricular septal defect, the child often has advanced cardiac insufficiency and pulmonary hypertension due to a large left-to-right shunt. For non-restricted ventricular septal defect, our general recommendations are: 1. If the medical drug control is effective, surgery can be performed after 5-6 months, according to individual differences, generally not more than 1 week old; 2. If the medical drug control is ineffective, early surgery is recommended; 3. Because of individual differences, some children with large ventricular defects have good growth and development above 1 year old, and there are no obvious clinical symptoms, such children are explored in our surgery The actual shunt is often smaller than the actual size of the defect because of the blockage of the defect by the valve tissue, especially in the sub-stem ventricular defect, which is generally recommended to be treated surgically at the age of about 1 year. One type of ventricular septal defect in particular is mentioned here – the subaortic ventricular septal defect (subaortic or subpulmonary valve). This type of defect often has prolapse of the right coronary sinus of the aorta, and the prolapsed right coronary sinus of the aorta will obscure part of the ventricular septal defect and thus reduce the left-to-right shunt, so some children have relatively mild symptoms, but long-term prolapse of the right coronary sinus under aortic hypertension will lead to regurgitation of the aortic valve, and severe regurgitation of the aortic valve requires surgical correction, so we advocate surgery around the age of 1 year in these children even if the symptoms are not obvious. The treatment.