Increased cardiac enzymes in newborns may be related to physiologic factors, or may be caused by myocarditis, infectious diseases and other factors. 1. Physiological factors: for example, when the newborn is born, along with the contraction of the mother’s uterus, the blood flow of the placenta or umbilical cord may be interrupted, causing transient hypoxia of the baby, which may cause transient cardiac enzymes to increase. 2. Myocarditis: If a newborn suffers from myocarditis, it can lead to congestion and edema of the myocardial cells of the child, resulting in increased myocardial enzymes, which may be accompanied by symptoms such as chest tightness, shortness of breath and chest pain. 3. Infectious diseases: common in upper respiratory tract infection, pneumonia and other diseases, due to viral infection invasion of the body, resulting in damage to the myocardium, resulting in damage to the integrity of the cell membrane, resulting in the release of cardiac enzymes in the cells, thus increasing cardiac enzymes. Increased cardiac enzymes in newborns may also be caused by other reasons. When obvious symptoms occur, it is recommended to consult a doctor as soon as possible to confirm the diagnosis of the cause and then give targeted treatment.