Eptifibatide is a platelet glycoprotein IIb/IIIa receptor reversible antagonist,adverse reactions are mild , it can be discontinued immediately while adverse reactions occur . It has Strong effect and high selectivity . It has no antigenicity,and it does not cause allergic reactions. It is used For acute coronary syndrome, coronary intervention before treatment and acute Q-wave myocardial infarction. It can relieve unstable angina symptoms and reduce the incidence of cardiovascular events. It can limit the non-Q-wave myocardial infarction,and reduce through wall myocardial infarction occurrance.