There is no clear data on the healing time of pediatric myocarditis; it can take as short as 2 to 3 months or as long as 1 year or more, depending on the individual. Myocarditis is an inflammatory disease that occurs mainly in the myocardium and can be caused by viral, bacterial, autoimmune and other factors. The most common form of myocarditis is viral myocarditis, which can be caused by coxsackievirus, poliovirus, measles virus, and so on. In the acute phase of myocarditis attack, timely and effective treatment is needed, it may be easier to recover, usually 2~3 months can be cured. If myocarditis is recurrent and prolonged or develops into chronic myocarditis, it may take more than 1 year. The specific situation varies from person to person. It is recommended to seek medical treatment in time to avoid delaying the best time for treatment.