1.After surgery, you must take the medication on time and in sufficient quantity according to the doctor’s prescription, and do not stop the medication casually; follow the discharge medical advice for timely review. The dose and course of postoperative medication should be decided according to the preoperative cardiac function, pulmonary hypertension and early postoperative recovery status. 2.After all, surgery is a big trauma, and it may take 2~3 months or even longer to fully recover from the damage to the whole body state. During this recovery period the child may experience a variety of discomforts, but they generally last for a short period of time. For small infants, careful observation of the child’s physical strength, appetite, and responsiveness (or mental state) is a relatively accurate sign of the post-operative recovery status. As long as these items have all recovered significantly, some symptoms that appear temporarily generally do not require special treatment, and if symptoms do not ease for a longer period of time, a physician should be consulted as soon as possible. Generally speaking, the heart function and lung function of children after congenital heart disease correction surgery will be significantly better than before surgery, approaching or reaching the level of “normal” children of the same age. Except for special cases with special instructions from the physician, most children can basically return to their preoperative state in 2-4 weeks after surgery, and some children even have a significant increase in food intake due to the reduced cardiopulmonary burden. In terms of feeding, the main points to note are: insist on small and frequent meals to avoid overeating; insist on a balanced diet to avoid partial eating; insist on a combination of wet and dry food and soft food to avoid drinking a lot of soup; insist on vitamin intake (fruits and vegetables) to avoid nutrient deficiency.