Congenital heart disease, in line with the doctor’s active treatment at the same time, parents’ careful care is also very important, should pay attention to the following aspects: try to keep the child quiet, avoid excessive crying, to ensure adequate sleep. The older children should have a regular life, combining movement and stillness, neither running around outside (running and jumping and strenuous exercise are strictly prohibited), nor do they need to lie in bed all day, and sleep must be guaranteed at night to reduce the burden on the heart. Children with cardiac insufficiency tend to sweat more, so they need to keep their skin clean, bathe regularly in summer, rub themselves with hot towels in winter (pay attention to keeping warm), and change their clothes and pants regularly. Feed more water to ensure sufficient hydration. The child should eat less and more meals, ensure sufficient intake of protein and vitamins, and give as diverse and easily digestible diet as possible. Keep the stool smooth, if the stool is dry and difficult to defecate, excessive force will increase the abdominal pressure, increasing the burden on the heart, and may even have serious consequences. Keep the air circulating in the room, and avoid staying in crowded public places as much as possible to reduce the chance of respiratory infections. Add and remove clothes in time with the warm weather and pay close attention to the prevention of colds. Regular follow-up visits to the cardiology clinic of the hospital and strict compliance with medical prescriptions, especially for cardiac and diuretic drugs, due to their pharmacological properties, the dosage must be absolutely controlled and taken on time and according to the course of treatment to ensure their efficacy. Before each dose of cardiac drugs, the pulse count must be measured, if the heart rate is too slow, should immediately stop taking, to prevent the occurrence of toxic effects of drugs, endangering the life of the child.