Abstract: PM2.5 refers to particulate matter with aerodynamic diameter less than 2.5 mm in the environment. It is one of the most important air pollutants in China. Acute myocardial infarction (AMI) is a severe ischemic heart disease, in which the coronary artery is completely or incompletely occluded, leading to acute necrosis of the local myocardium and endangering the life of patients. In recent years, many scholars have found that PM2.5 can affect the occurrence and outcome of AMI. This article reviews the role of PM2.5 in the occurrence, development and possible pathogenesis of AMI, in order to improve the understanding of PM2.5 in various aspects and to reduce the incidence of AMI.

Key words: acute myocardial infarction, risk factors, PM2.5, correlation