Congenital heart disease (congenital heart disease) is a common and frequent disease, and about 0.8% of newborns are born with congenital heart disease. In China, there are about 150,000 newborns with different forms of congenital heart disease every year. Precardiac disease is not easily detected by parents in the early stages of the disease, so it is important to check the heart of newborns and children, and if there are any abnormalities, they should go to the hospital for echocardiography and, if necessary, cardiac catheterization. If the child has never undergone a heart examination, and has feeding difficulties, weight gain, shortness of breath, rapid heartbeat, slower growth than children of the same age, little exercise, easy to catch a cold, or chest tightness, panic, purple lips and abnormal bulging of the left chest, that is, may suffer from congenital heart disease, should go to the hospital cardiology examination as soon as possible. Congenital heart disease is an abnormality in the structure and function of the heart blood vessels, people usually think that only surgery can be treated, but surgery is risky and leaves scars, so there are many concerns, affecting the enthusiasm of children and parents to seek treatment. In fact, a large proportion of precordial diseases (such as pulmonary stenosis, atrial septal defect, patent ductus arteriosus, pulmonary arteriovenous fistula, coronary arteriovenous fistula, pulmonary stenosis, aortic stenosis) can be cured or relieved by interventional treatment. However, due to the lack of public awareness of this technology, only about 4000 children have been treated with interventions in the past 20 years, which is very disproportionate to the total number of patients. In some cases, interventions are done before surgical treatment to relieve symptoms and create conditions for surgery. In other cases, postoperative fistulas or stenoses can be performed in order to relieve the symptoms of the children who have lost the opportunity for surgical treatment. The principle of treatment for precardiac disease is early diagnosis and early treatment. If heart failure occurs after birth, cardiac catheterization can be performed immediately, and interventional treatment should be performed immediately if necessary. For asymptomatic children after birth, such as pulmonary valve stenosis and patent ductus arteriosus, interventional treatment can be performed at the age of about half a year. For atrial septal defect, interventional treatment can be performed after two years of age. For ventricular septal defect, intervention can be performed at the age of 3 to 6 years. Parents should not delay a disease that can be cured before the age of 4 until the child reaches adulthood, so that the time for treatment is lost. Interventional treatment of precardiac disease is simple and involves the use of a catheter delivered through the femoral artery of the lower extremity to dilate or seal the heart lesion. Interventional treatment is less invasive, and the child can move freely one day after the procedure, and can be discharged two days after the procedure. The success rate of treatment for pulmonary valve stenosis, atrial septal defect and patent ductus arteriosus is over 95%. The long-term efficacy of interventional treatment for precardiac disease is good, and the treatment effect of pulmonary valve stenosis, atrial septal defect and patent ductus arteriosus is the same as that of surgery, but with fewer complications, and it can completely replace surgery. In conclusion, interventional therapy is the best treatment route available for patients with precordial disease.