Cardiomyopathy and coronary heart disease can have heart failure, arrhythmia and other clinical manifestations, but their essence is different. Cardiomyopathy refers to a group of diseases other than coronary heart disease, heart valve disease, hypertensive heart disease, pneumonic heart disease, congenital heart disease, etc., which are mainly characterized by myocardial lesions, including dilated cardiomyopathy, hypertrophic cardiomyopathy, restrictive cardiomyopathy, arrhythmogenic right ventricular cardiomyopathy, and indeterminate cardiomyopathy. Cardiomyopathy it is usually divided into two categories, primary cardiomyopathy and secondary cardiomyopathy. Coronary heart disease is mainly heart vascular disease, refers to the coronary artery atherosclerosis, so that the lumen narrowing or obstruction, or coronary artery function changes, resulting in myocardial ischemia, hypoxia or necrosis and lead to heart disease. Lesions of the coronary blood vessels, also known as coronary heart disease, refers to heart disease caused by an imbalance between oxygen supply and oxygen demand. In terms of incidence, coronary heart disease is more prevalent than cardiomyopathy.