大气PM2.5,因其显著的环境、气候与健康效应,当前受到公众的高度关注.本文介绍了PM2,基本特征,简要综述了全球与我国PM2.5污染状况,地面观测和卫星数据都显示了我国东部地区的全球PM2.5,的高污染区域,其平均浓度比欧美发达国家高1-2个数量级.针对各种污染源分类讨论了相应的控制对策和方案,提出解决PM2.5,污染务必认清其长期性、复杂性和正确性. “,”Atmospheric PMz.5 was received highly attentions recently due to its obvious environmental, climatic and health effects. This paper reviewed the basic features of PM2.5 and its spatial distribution in China and in the world. Ground-based observation and satellite data implied that eastern China was a high PM2.5 pollution area in the world and the PM2.5 mass concentrations in eastern China were 1 -2 orders of magnitude higher than those in Europe and American countries. According to the characterizations of diverse PM2.5 emission sources, appropriated prevention and cure strategies were put forth after considering the length, complex, and correctness of PM2.5 pollution control.