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 a precocious heart, 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 to perform the surgery, thus missing the opportunity to operate and causing lifelong regrets. Therefore, parents should consult with authoritative experts about when their children should have surgery, and should not wait blindly. With the development of modern medical technology, the operation time of heart disease cannot be determined by 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 addition, in children with tetralogy of Fallot, severe hypoxia can affect the function of the child’s vital organs, and even a single episode of severe hypoxia 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, follow the advice of professional doctors, and operate at a later date according to the growth and development of the child and the disease. The treatment is based on the growth and development of the child and the disease. Therefore, the timing of surgery is different for different types of precardiac disease, and the patient’s own situation should be considered.