The following aspects should be paid attention to after open heart surgery for precordial disease: First, in terms of living habits, attention should be paid to limiting physical activities, avoiding strenuous exercise and emotional fluctuations, allowing the child to rest more, and if the heart function is assessed to be normal, appropriate activities can be performed, and sufficient sleep should be ensured. Second, the care of the wound, to keep the skin clean, avoid wound pollution and moisture, regular change of medication until the wound heals. Third, the diet, to give children high protein, high vitamin, easy to digest food, can promote the recovery of the disease, to avoid constipation. Fourth, the application of drugs, some serious and complex deformities, combined with heart failure, etc., often need to take cardiac drugs, diuretics and vasoactive drugs, to strictly follow the doctor’s orders to implement. Fifth, to follow the doctor’s instructions, timely review of cardiac ultrasound and related items, timely detection of postoperative complications, and timely treatment.