Abstract: The high mortality of myocarditis has attracted the clinical doctors’ eyes. The diagnosis and treatment of myocarditis has undergone the process from debating to consensus. The endomyocardial biopsy, combined with the technique of immunohistochemistry, has more sensitivity. The cardiovascular magnetic resonance is the hot topic, not only for that it can guide the endomyocardial biopsy, but also it has its own diagnosis criteria of myocarditis- Lake Louse consensus criteria. The cardiogenic shock and malignant ventricular arrhythmia should be intervened actively, by using the technique of extracorporeal membrane oxygenation and intra-aortic balloon pump and implantable cardioverter defibrillator(ICD). IFN is used to treat the patients with persistent virus infection, which can improve the prognosis of dilated cardiomyopathy　and that intravenous immunoglobulin plays a role in the treatment of myocarditis of children. Lowing the mortality and the everlasting infectious rate of myocarditis is the future research point.