General treatment principles: 1, reduce the heart load: bed rest; pay attention to diet (encourage patients to eat easily digestible and vitamin-rich food, especially vitamin C and high-quality protein); strengthen care. 2. Treatment of arrhythmias; 3. Prevention and control of causative factors and prevention of bacterial infections. Drug therapy: 1, antiviral agents: ribavirin, interferon, virazole. 2, adrenal glucocorticoids: can make severe heart failure better and reduce high atrioventricular block. 3, gammaglobulin: participate in humoral and cellular immune response, can neutralize antibodies and viral antigens, inhibit viral replication. 4.B-blockers and ACE inhibitors. 5.Other: polarizing fluid; coenzyme Q; astragalus, etc.