中文摘要：

许多流行病学和毒理学研究表明,大气PM2.5可以增加心血管疾病的发病率和死亡率。PM2.5是雾霾的重要组分,与呼吸系统和心血管系统疾病密切相关。该文综述了大气PM2.5的来源、成分及其对人群心血管疾病影响的流行病学、毒理学和可能机制,并提出了PM2.5对心血管系统影响研究可能的发展方向。

英文摘要：

Many studies from epidemiology and toxicology have shown that atmospheric PM2.5can increase morbidity and mortality of cardiovascular disease. PM2.5is an important constituent part of haze, it is closely related to the respiratory system and cardiovascular system. This review included sources and composition of PM2.5, the epidemiology and toxicology research progress, and the possible mechanism about cardiovascular disease combined with the above content, presented the possible direction of PM2.5health impact studies on the cardiovascular system.