Myocardial stunning is a phenomenon that the recovery of myocardial contraction function delayed after transient ischemia reperfusion. It affects seriously the success rate of arious cardiac surgery. Therefore,reducing the incidence of myocardial stunning became one of new hot spots about the ischemia-reperfusion injury nowdays. In recent years, there are many research reports of prevention and treatment of myocardial stunning，these studies would provide the theoretical and experimental basis for the prevention and cure of myocardial stunning in clinic.