Myocarditis and cardiomyopathy are two diseases that are fundamentally different. Myocarditis is caused by inflammation or other causes of inflammation of the inner lining of the heart muscle, and myocarditis can be cured; cardiomyopathy is caused by coronary heart disease, heart valve disease or other irreversible genetic factors that cause damage to the heart muscle, resulting in irreversible damage to the heart, and cardiomyopathy can only prolong the patient’s life but cannot be cured. Once a patient develops myocarditis or cardiomyopathy, he or she must go to a regular hospital for special examination, diagnosis and treatment. The main focus of myocarditis is on anti-inflammatory and myocardial nutrition, based on blood cultures to select sensitive antibiotics for anti-inflammatory treatment, as well as myocardial nutrition treatment. In contrast, cardiomyopathy mainly prolongs the patient’s life, gives cardiac diuretic drugs, and improves the patient’s clinical symptoms. Both myocarditis and cardiomyopathy are clinically very serious diseases, but myocarditis can be cured by timely diagnosis and treatment, while cardiomyopathy tends to be more serious and is clinically treated mainly to improve the symptoms and prolong the life of the patient.