The PM_2.5 pollution has been the public concern in China since 2011. This paper reviews the fundamental concepts related to PM_2.5 and the brief history of its mitigation, including the current situation of PM_2.5 pollution in China and the three general causes for China's PM_2.5 pollution. The coal-based energy structure leads to the high concentration of PM_2.5 to a large degree in China, the extensive economy is the culprit for frequent haze breakouts, and the pollutant transportation very likely causes the regional pollutions. Also, this paper analyzes and summarizes the characteristics of PM_2.5 pollution based on the divergence of different pollution sources, the difference of energy structure and economic level, topographical and meteorological conditions. On the basis of this analysis, some control strategies are proposed in the following three aspects:Restructuring the energy structure to control PM_2.5 pollution, building up a new PM_2.5 mitigation system based on scientific considerations, and reforming the management system including legislations to guarantee the overall effect.

PM_2.5  /  current situation of pollution  /  general and unique characteristics of pollution  /  control strategy