The deepening of our understanding on the cardiac electrophysiology mechanism and the progress on cell transplantation technique have expanded our view in treating various kinds of cardiac diseases. Over the past few years literatures have reported many kinds of cell transplantation techniques for treating various types of bradyarrhythmias, such as complete heart block and sinoatrial node dysfunction, and impressive achievements have been made by far. This review discusses the advantages and flaws of the existing strategies and the future of biological pacemakers