Aim To evaluate the long-term outcomes of myocardial infarction after coronary artery interventional therapy （PCI）. Methods 862 patients（mean age 58 years,range 27～82 years） who accepted PCI were followed up. According to the time of PCI, they were divided into three groups: group of emergency PCI, group of remedial PCI and group of elective PCI. Death, major adverse cardiovascular or cerebrovascular events and angina pectoris were observed. The relative risk of adverse events in different patients were analyzed by multivariate Cox analysis. Results The patients were followed up for 4.26 to 5.25 years（average 4.93 years）. Incidence rate of death and heart failure in group of elective PCI was higher than the other two groups. Prognosis of PCI was relative with age, smoking, diabetic, coronary artery and ejection fraction. Conclusion Multiple factors participate in the prognosis of PCI, and for the acute myocardial infarction,long-term outcomes of emergency and remedial PCI were better than that of elective PCI.