Abstract:The purpose of this paper is to study the factor which influence the concentration of PM.5 and its variation in order to provide some advice on how to deal with the air pollution for the society and everybody in this world.....Zhou Yingying,Mei Hongzhu,Che Chang,Liang Anjian,Wang Kunlin,Zhao Ruiya,Wu Zhuocun,Hu Ziqi,Li Miaohui,Li Shuhui,Shao Huizhen,Qian Junyi,Ye Linbo,Jia Luyuan