The second child, advanced maternal age, precocious heart disease With the full liberalization of the two-child policy, the second baby’s parents are delighted, have begun to jump to try! But, you know what, you know what? Congenital heart disease is the first disease of birth defects in China, each year, China’s new 150,000 to 200,000 babies with congenital heart disease, congenital heart disease has become the number one killer of newborns, but also to bring a heavy burden on the family and society. Here, we will tell the pregnant mamas how to avoid having a baby with congenital heart disease, and what are the symptoms of a baby with congenital heart disease. The main causes of congenital heart disease can be divided into environmental factors and genetic factors, mainly caused by a combination of factors, especially now the aggravation of environmental pollution, advanced age pregnancy and other aggravate the occurrence of such diseases. There are five main aspects: 1, family history of congenital heart disease; 2, pregnant women with diabetes; 3, viral infection or exposure to teratogenic drugs in early pregnancy; 4, exposure to radioactive substances in early pregnancy; 5, consanguineous marriage; 6, excessive mental stress, etc. Therefore, pregnant women should pay attention to these during pregnancy to avoid their babies suffering from precocious heart disease. Pregnant women should try to avoid exposure to radiation during pregnancy, not to take drugs indiscriminately, to seek medical attention when they have a cold, and to do regular maternity checkups so that early detection can be treated as early as possible. In addition, some studies have shown that folic acid supplementation during pregnancy has a preventive effect on some cases of precocious heart disease.