Abstract:This paper systematically summarizes the related research on atmospheric haze in recent years by Chinese Academy of Sciences, such as establishing observation and simulation platform of atmospheric quality,researching and developing monitoring equipment and emission decreasing technology at source, assuring the atmospheric quality for major national events, and so on. A series of progress have been achieved on mechanism that induce haze, apportionment and control technology of pollutant source. Chinese Academy of Sciences will take“Mechanism search and control of atmospheric haze”as major research field, particularly strengthen the research on haze forming mechanism and its health effect, accelerate the platform construction, continuously elevate the scientific research level on atmospheric environment, and improve the ability of science and technology supported environmental pollution prevention.