As for the question of what symptoms a child will have when he or she has congenital heart disease, the disease actually manifests itself in different ways depending on the type of congenital heart the child has. First of all, leftward and rightward shunts are relatively common, and children with relatively mild forms of congenital heart disease may have no symptoms. If it is relatively more serious, the child may have different clinical manifestations depending on the location of the shunt, such as palpitations, chest tightness, shortness of breath, excessive sweating, fatigue and so on after exertion. The child may also have difficulty in eating, be prone to respiratory infections, and have developmental disorders, which are common in left-to-right shunts. If the child has a right-to-left shunt, which is a more serious type of CHD, the child’s most common manifestations are bruising all over the body, and if the blood oxygen saturation is measured, there will be a significant decrease in oxygen saturation, and the child will also have shortness of breath, fatigue, and obvious limitation of activities, and after crying or eating, there will be obvious cyanosis to aggravate the hypoxic manifestations of the onset of the disease. Other children may have chest pain, coughing up blood, or fainting, all of which may be present in children with right-to-left shunt CHD. Some children with right-to-left shunts may also have non-shunted CHD, and the main manifestation of this type of child is insufficient ejection of blood from the heart, for example, the child may have weakness, palpitations, dyspnea, shortness of breath, and may even have fainting or angina, and so on. Therefore, for children with different types of CHD, their manifestations may be different, so the clinic has to take into account the different symptoms to confirm which type of CHD the child is, and then do the corresponding symptomatic treatment.