It is well known that patients with congenital heart disease are suffering from congenital heart defects due to malformations in the development of heart vessels that disrupt the normal pathways of blood circulation in the human body. The common ones are ventricular septal defect, atrial septal defect, patent ductus arteriosus and other congenital heart diseases. Some patients may be asymptomatic in infancy because the heart defect is not serious, and only gradually develop symptoms or find heart murmurs during physical examination as the heart burden increases with age and physical development, and some even develop symptoms only in adulthood. However, most of the children with precordial disease may show abnormal manifestations different from normal infants as early as infancy, such as coarse breathing in a quiet state, increased breathing up to 40-60 times per minute, blue around the mouth, pale face, especially when crying and breastfeeding, the above symptoms are more serious, often stopping to gasp after a few mouthfuls of milk; children with precordial disease have a small amount of food, appetite is mostly bad; these children are also particularly These children are also prone to colds, bronchitis and pneumonia combined with heart failure, and pneumonia is not easy to cure. In winter, respiratory infections often occur frequently, so the growth of children lags behind that of children of the same age, they are thin and small, and not only are their activities limited, but they are also easily fatigued after activities. These symptoms are due to the increase in pulmonary blood volume caused by cardiovascular malformation. There are also some children who gradually develop cyanosis after birth due to cardiovascular malformations that cause low oxygen content in the blood, which is medically known as cyanotic congenital heart disease such as tetralogy of Fallot. Parents may find that the child’s lips, fingers and toes are cyanotic (blue) and the ends of the fingers and toes become wider and thicker like drumsticks, which is medically known as pestle-like fingers. Severe cyanosis can be seen in children with severe cyanosis, which is obvious from birth. This cyanosis may be followed by sudden irritability, increased cyanosis, difficulty in breathing, or even seizures or confusion, which is medically known as hypoxic attack, and is a dangerous condition requiring emergency treatment. When the child grows up and starts to walk, he often likes to squat and rest after walking a few steps; or he often takes a squatting position and talks to children, which are all clues with diagnostic value. Parents and relatives should carefully follow the doctor’s instructions and do postnatal checkups and regular health checks for their newborn babies, because some babies are born with a “normal” heart and the doctor cannot hear any murmur in their heart, which is only discovered when they are examined after the first month or later. Observe the child. 1. Observe whether the baby’s skin is continuously cyanotic after birth. 2.Whether the child has recurrent delirium. 3.Frequent colds, recurrent infections of the respiratory tract, bronchial tubes, and lungs. 4.Difficulty in breastfeeding or the infant refuses to eat, choking and coughing, and shortness of breath in general. 5.Growth retardation, wasting, and excessive sweating. 6.Children complain of easy fatigue, poor stamina, greenish or long breath around the mouth. 7.The examination reveals the presence of congenital malformations in other parts of the body. If parents find that their children have the above abnormal performance different from healthy children of the same age, they should promptly go to the hospital to check whether there is congenital heart disease and which type of congenital heart disease they belong to. The purpose is to eradicate the cardiovascular malformation, so that the affected children can get a new life and can participate in learning and live a colorful and happy life as healthy children.