Abstract:Circular RNA (circRNA) is a kind of non-coding RNA with covalently closed structure, and is characterized as widely distributed, diversified, not easily degraded by nuclease, stable and highly conservative. The researches have shown that circRNA participates in the pathophysiological process of heart failure by influencing myocardial fibrosis, hypertrophy of cardiac cells, myocardial injury and apoptosis. Therefore, it is promising to become a new biomarker and treatment target of heart failure. This paper will review the biological characteristics, formation mechanism and biological function of circRNA and advances on the roles of circRNA in heart failure.