The mortality rate of myocarditis is usually impossible to determine, but it is somewhat higher if it is in the acute phase. Most mild forms of myocarditis are usually not life-threatening and do not have a high mortality rate, and most patients recover with appropriate treatment. Very few patients die in the acute stage due to severe arrhythmias, acute heart failure and cardiogenic shock, so the mortality rate is a bit higher. It is recommended to have a good bed rest, follow the doctor’s instructions to use drugs to improve myocardial metabolism, such as sodium creatine phosphate, and follow the doctor’s instructions to use diuretics, vasodilators, ACEIs and so on, the prognosis is relatively good. However, in the case of fulminant myocarditis, malignant arrhythmia, heart failure, etc., also need to use ECMO, and the complication of bradycardia may require the use of temporary pacemakers. Therefore, after the diagnosis of myocarditis patients should be timely according to the doctor’s instructions for treatment, pay more attention to rest, do not have heavy physical labor, quit smoking and alcohol.