Cardiac autonomic neuropathy (CAN) is a serious complication of diabetes mellitus, that is strongly associated with increased risk of cardiovascular mortality. Although it is common complication, the significance of CAN has not been fully appreciated and there are no unified treatment algorithms for today. In this review we have analyzed the existing data about the known risk factors, screening and diagnostic algorithm, staging of CAN and possible treatment, including effectiveness of lifestyle modification, intensive glycemic control; treatment of diabetic dyslipidemia; antioxidants; vitamins; correction of vascular endothelial dysfunction; prevention and treatment of thrombosis; treatment of orthostatic hypotension.