Abstract: Cardiomyopathies are a heterogeneous group of diseases of the myocardium associated with mechanical and/or electrical dysfunction. Arrhythmia， one of major clinic manifestations of  cardiomyopathies， plays a significant role in the progression and prognosis of cardiomyopathies， for it will aggravate myocardial remodeling and lead to cardiac sudden death. Given that cardiomyopathies have complicated pathological changes and various manifestations of arrhythmia， it has great clinical value to understand， prevent and cure arrhythmias for cardiomyopathy patients.

Key words: arrhythmia, cardiomyopathy