Although congenital heart disease has accounted for the first birth defect in China, and there are about 10 million patients in the country, most of them can be cured, and there will be no sequelae. The premise of the cure is that timely detection and early treatment, the earlier the treatment the better the results. The key to preventing congenital heart disease is during pregnancy The key to preventing congenital heart disease is during pregnancy. Pregnant women should try to avoid radiation exposure during pregnancy, should not take medicine indiscriminately, should seek medical attention when they have a cold, and should do regular maternity checkups. Early detection and diagnosis of congenital heart disease and early treatment are very important for the life of the child. In addition, some studies have shown that folic acid supplementation during pregnancy has a preventive effect on some congenital heart diseases. Parents should also be alert for congenital heart disease warning behaviors. Babies often exhibit puzzling behaviors such as incessant crying and inexplicable restlessness that can be difficult to “calm” down. Don’t think of this as a baby “crying”; these behaviors are a sign that they may have a heart problem. What to check for congenital heart disease 1, physical examination If the physical examination reveals a typical heart organism murmur heart sound, low blunt heart enlargement, arrhythmia, liver large should be further examined to exclude congenital heart disease. 2.Special examination (1)X-ray examination: there may be increased or decreased lung texture and enlarged heart, but normal lung texture and normal heart size cannot exclude congenital heart disease. (2) Ultrasonography: quantitative measurement of the size of the chambers and blood vessels of the heart to diagnose anatomical abnormalities of the heart and their severity is one of the most common diagnostic methods of congenital heart disease. (3) Electrocardiography: It can reflect the heart location atria and ventricles with or without hypertrophy and the heart conduction system. (4)Cardiac catheterization: It is one of the important examination methods to further clarify the diagnosis of congenital heart disease and decide on the surgery before surgery. Through catheterization, we can understand the blood oxygen content and pressure changes in different parts of the heart chambers and large blood vessels, and clarify the presence or absence of shunts and the parts of shunts. (5) Cardiovascular imaging: Patients who cannot be diagnosed clearly through catheterization and need to consider surgical treatment can undergo cardiovascular imaging, in which iodine-containing contrast is rapidly injected into the heart or great vessels through the cardiac catheter under mechanical high pressure, while continuous rapid filming or movie is taken to observe the contrast, showing the morphology, size and location of the atria, ventricles and great vessels, as well as the presence of abnormal channels or stenosis and atresia. Through the above introduction now you have a comprehensive understanding of the congenital heart disease examination items, in the presence of suspected symptoms must go to the regular hospital for examination, do not miss the best time for treatment, resulting in the loss of precious life of the child.