The preceding typical atmosphere of Beijing Olymplc Game were measured and analyzed in combine with Raman Lidar,Tapered Element Oscillating Microbalance (TEOM),Black Carbon (BC) and Visibility analyzer from July 19 to July 28 in 2008.The vertical profile and spatio-temporal distribution of aerosol extinction coefficient was shown,and the ratio of aerosol extinction and backscatter was calculated.The relationship of visibility,PM10,PM2.5,BC and aerosol extinction coefficient was analyzed with the data of visibility and mass concentration of particle matter at atmospheric haze.The result shows that there has direct correlation of visibility,mass concentration of particle matter and aerosol extinction coefficient.The technique and method can be provided for controlling the composite pollution of atmosphere based on data comparison,complementary and enrichment of different instrument,and the scientific basic and reference can be provided for treatment of urban air pollution.