To explore the mechanism of electroacupuncture(EA) on Neiguan point on myocardial ischemia-reperfusion injury,the changes of Creatine Rinase (CK) and malondialdehyde(MDA) in blood serum were observed 40 min after myocardial ischemia and 1h after reperfasion. results:As compared with the EA group, the contents of CK and MDA of myocardial ischemia-reperfasion group were increased significantly and their differenses were also apparent(P