In China, the incidence of congenital heart disease (later referred to as congenital heart disease) in infants and young children is 6-8 per 1,000, with about 100,000 cases of children born with congenital heart disease each year. Among these cases, four types of diseases such as atrial septal defect, ventricular septal defect, arteriovenous ductus arteriosus, and tetralogy of Fallot account for the majority of the first three types of diseases are relatively simple congenital heart disease, surgery (or intervention) is effective, after correction and treatment of the child is generally no different from normal people. In addition to the impossibility of self-healing from tetralogy of Fallot, the other three types of diseases have a certain percentage of children with the possibility of self-healing, without the need for any drug and surgical intervention. It is probably the greatest joy for parents to see their babies with prediabetes heal on their own, but we also need to take an objective and scientific view of the self-healing of these simple prediabetes diseases. Although atrial defect, ventricular defect and patent ductus arteriosus are simple types of pediatric precardiac disease, they also have a detailed classification. Atrial defect can generally be divided into five types: foramen ovale, secondary foramen ovale, coronary sinus, venous sinus and common atrium; ventricular defect can be divided into perimembranous (also known as subventricular crest type), funicular (also known as supraventricular crest type, inferior stem type, sub pulmonary valve type, etc.), myocardial, atrioventricular access type (also known as septal posterior type), mixed type, etc.; there are also five types of arteriovenous insufficiency: tubular, window, funnel, dumbbell, and aneurysmal. These classifications are difficult for the baby’s family to understand, but they can provide some rough insight into the baby’s precordial disease accordingly. Atrial septal defects that are likely to heal spontaneously: foramen ovale, secondary foramen ovale (less than 5 mm in diameter). Possible self-healing ventricular septal defects: perimembranous type (less than 5mm in diameter), myocardial type (less than 5mm in diameter). Arteriovenous ductus arteriosus with possible spontaneous healing: tubular (less than 4 mm in diameter), funnel (less than 4 mm in diameter), and dumbbell (less than 4 mm in diameter). In babies just within 1 month of birth, if ultrasound reveals the presence of an atrial septal defect (less than 4 mm in diameter) or/and ductus arteriosus (less than 3 mm in diameter), this is usually a sign that the fetal circulation has not closed in time and will most likely do so in the subsequent period, and such cases have the greatest chance of self-healing. If a ventricular septal defect is present, it is definitely an anomaly. If the defect is small and its location is consistent with the above-mentioned indicators of self-healing, a repeat cardiac ultrasound can be performed at three months and at half a year of age, and its self-healing cannot be excluded. If the defect is large, the baby will be prone to pneumonia, heart failure, growth retardation, etc. in the future, and should be followed up by early visits to specialized hospitals. It is important to note that for other simple precordial diseases that are not among the types that can heal spontaneously, the baby’s family should not take a chance and delay, expecting a miracle to happen. In the case of pulmonary subvalvular ventricular septal defect, for example, the chance of self-healing is very small, and the long-term existence of this type of precordial heart will affect the nearby aortic valve, and the aortic coronary valve will be disassembled into the ventricular septal defect, and if the time is longer, it may even lead to serious complications such as aortic insufficiency, so this type of ventricular defect should be treated with surgery as soon as it is detected. For simple precordial diseases that can heal spontaneously, we should also look at them differently. The chances of reopening atrial septal defects and patent ductus arteriosus once they heal spontaneously are very low, which is closely related to their own anatomical structure. In the case of periventricular septal defects that have the potential to heal spontaneously, if the diameter of the defect is large, it is often surrounded by crater-like fibrous growths or paravalvular obscuration of the tricuspid valve, a condition that we call pseudoventricular septal tumor formation. In the ultrasound report of the heart, we often see the terminology: “ventricular defect base diameter is 8 mm, pseudoseptal tumor formation, shunt opening is 3 mm”, which means that the diameter of the ventricular defect itself is 8 mm, but due to the obstruction of the fibrous tissue and tricuspid valve, the left-to-right shunt blood is only 3 mm wide. To some extent, pseudoseptal tumor formation is an important marker of self-healing ventricular septum, but it is not a very reliable indicator. Even if the pseudoseptal tumor completely covers the ventricular septum and no shunt exists, the possibility of future rupture of the septal tumor and reopening of the ventricular septum cannot be ruled out under certain special circumstances. On the other hand, the formation of a pseudoseptal tumor depends on the involvement of the tricuspid valve, and if too much tricuspid tissue is involved in the formation of a septal tumor, it may cause undesirable complications such as tricuspid regurgitation. In conclusion, if a baby is found to have congenital heart disease, he or she should consult a physician at a specialized hospital as early as possible to avoid missing the best opportunity for treatment. We should take a scientific view on the self-healing of simple congenital heart disease and make our babies grow up healthier and stronger under the guidance of professional physicians.