The baby’s myocarditis is a viral infection that is a bit difficult to cure completely because myocarditis can lead to myocardial necrosis causing cardiac insufficiency, but the treatment is still effective and the older the baby is the better the prognosis. The clinical manifestations of the onset of the baby are age-related and can be seen in clinical weakness, panic or chest pain, which is more severe in newborns, with elevated body temperature, breathing difficulties and purple lips. Treatment can use high doses of vitamin C, coenzyme Q10, vitamin E think, to improve myocardial nutrition has a great benefit, but also can choose to use gammaglobulin to reduce the damage to the heart muscle cells. Some individuals will be complicated by severe arrhythmias or heart failure, which may leave sequelae or death, and some incomplete treatment will develop dilated cardiomyopathy.