近年来,对不稳定性心绞痛(unstable angina,UA)和非ST 段抬高心肌梗死(non-ST-elevation myocardial infarction,NSTEMI)病理生理机制的认识逐步深入,有关大规模临床试验结果陆续问世,其临床治疗也有重要进展。为了更好的总结这些经验,合理指导临床实践,中华医学会心血管病学分会、中华心血管病杂志编辑委员会根据近年来有关临床试验的研究结果,参考美国心脏病学会(ACC)/美国心脏协会(AHA)及欧洲心脏病学会(ESC)的有关指南,并结合我国心血管病防治的具体情况,组织有关专家制定了我国 UA In recent years, the understanding of the pathophysiological mechanisms of unstable angina (UA) and non-ST-elevation myocardial infarction (NSTEMI) has been gradually deepened. The results of large-scale clinical trials have come out one after another, Its clinical treatment also has important progress. In order to better summarize these experiences and guide clinical practice reasonably, according to the results of clinical trials conducted in recent years by the Chinese Medical Association Cardiovascular Branch and the Chinese Cardiovascular Diseases Editorial Board, reference is made to the American College of Cardiology (ACC) / American Heart Association (AHA) and the European Society of Cardiology (ESC) guidelines, combined with the specific situation of prevention and treatment of cardiovascular disease in China, the organization of experts to develop our country UA