In clinical work, we are often asked by parents of children when surgery is best for congenital heart disease, and this question is different for each child specifically. Generally speaking, if the condition is relatively mild, has little impact on the growth and development of the child, and has no significant progress in a short period of time, there is no need to rush to surgery, such as small ventricular septal defect or atrial septal defect, the defect is below 0.5 cm with the possibility of natural closure, and it is not too late to operate if it is still not closed by 6-7 years old. However, for some children with complex deformities, heavy lesions and progressive developmental trends, such as large ventricular septal defects and arteriovenous ductus arteriosus with pulmonary hypertension, such children may be aggravated and even lose the opportunity for surgery if they are not operated in time. Some children with precordial disease have complex malformations, so the mortality rate of one radical operation is high, and two or even three operations are required. For example, in infants with ventricular septal defect with pulmonary hypertension, a pulsatile artery annuloplasty can be done first to reduce pulmonary congestion, so that the chance of pneumonia and heart failure is greatly reduced, and then the ventricular septal defect can be repaired when the child is a little older. In addition, if the development of the pulmonary artery is poor in the case of tetralogy of Fallot, the right ventricular outflow tract can be unblocked or the body pulse artery shunt can be done first in infancy, and then radical surgery can be done after a few years, often with better results. Some children have very complicated conditions and need to be operated on within a short time after birth, otherwise there is a risk to life, while others have more complicated conditions and can only undergo palliative surgery, which also depends on the condition of the child to decide when to operate, otherwise there is no chance of palliative surgery even if the timing of the operation is missed. All in all, the right time to operate on a child with congenital heart disease is to go to a professional pediatric cardiac surgeon and get reasonable advice from a professional pediatric cardiac surgeon after a detailed examination, and not to blindly listen to the opinions of non-professionals.