For the treatment of congenital heart disease, the age factor is one of the considerations, but more importantly, it is a comprehensive consideration based on the type of lesion, its development and its impact on the child’s developmental status. In this issue, it is important to follow the advice of a specialist. After the diagnosis of a child with precordial heart disease, some parents think that the child is too young to withstand the trauma of surgery and that it is safer to wait until the child is older before performing surgery, thus delaying the disease and losing the opportunity to operate, resulting in lifelong regrets. With the development of modern medical technology, the operation time of heart disease can not be determined by the size of the age, but should be based on the specific condition of the patient, especially some complex congenital heart disease, for these children life and treatment time is calculated in “hours”, such as complete transposition of the great arteries, must be operated after birth, otherwise the child will Otherwise, the child will die suddenly or lose the opportunity for corrective surgery. In addition to complex precordial diseases such as complete transposition of the great arteries, some children’s lives are measured in months, such as large ventricular septal defects, and if surgery is not performed in time, the child’s development will be affected by recurrent heart failure and lung infections, and severe pulmonary hypertension will occur and the opportunity for surgery will be lost. In children with tetralogy of Fallot, for example, severe hypoxia can affect the function of the child’s vital organs, and even a single severe hypoxic episode can endanger the child’s life. For example, ventricular septal defect and atrial septal defect with a diameter of 0.5 cm or less have a small impact on the growth and development of the child and can be treated without surgery for the time being, but must be observed regularly, listen to the advice of professional doctors, and operate at a later date according to the growth and development of the child and the disease. However, regular observation and professional advice are necessary.