How to treat congenital heart disease? Generally speaking, it depends on the type and severity of deformity, the patient's surgery timing, preoperative functional status, and cardiac complications to diagnose. The patient of non -shunt or left to right shunt class, asymptomatic patient with minor symptoms, no ECG and X-ray abnormalities and those with moderate illness also can receive surgery and will have better prognoses. If it has generated severe pulmonary hypertension, the worse prognoses will appear. The right to left shunt class or complex deformities is in serious condition, and they should strive for an early surgical operation. The asymptomatic patient with minor symptoms can choose the surgery timing, and 10-year-old is better.