The symptoms of children with pediatric precardiac disease vary greatly, and some, especially mild children, do not show any symptoms, only heart murmurs are found during physical examination. For such children, they can be raised completely as normal children while waiting for surgery, and there is no need to worry. For children with a variety of symptoms, the following issues need to be noted: 1. If the child is competent, he or she can live and study with normal children, but should prevent strenuous activities, rest appropriately, and avoid overexertion. 2. Give a high protein, high calorie, vitamin-rich diet to reserve enough energy for the surgery, but avoid overfeeding. Some children are prone to shortness of breath when sucking and stop sucking, and are prone to vomit and sweat a lot. 3, indoor air should be circulated, and windows should be opened regularly in winter. For children with cyanosis, the room temperature should not be too high, and give enough water to avoid sweating and dehydration, causing hypoxic attacks and thrombosis. 4.Keep the bowels open, especially important for cyanotic children. 5, children with congenital heart disease should not be given a large number of rapid infusions in a short period of time to prevent increasing the burden on the heart and leading to heart failure. 6, congenital heart disease children are weak, prone to colds, pneumonia and other diseases, and easy to complicate the heart failure, should be timely increase and decrease clothing with the change of seasons, if there are upper respiratory tract infections at home, should take isolation measures, usually try to take the child to public places. 7, cyanotic children try not to make the child cry, reduce unnecessary stimulation, so as not to cause hypoxic attacks. 8, cyanotic children will sometimes take the initiative to squat for a moment after walking or playing, this is because squatting can make the hypoxic symptoms relieved, do not forcibly pull up the child.