The Lidar data and Atmopheric Optical Depth (AOD) of MODIS from April to November,2011 was fil-trated,a method to estimate PM-concentrations base on vertical aerosol extinction profiles by MPL and AOD from MO-DIS was put forward.The method compare then was used to the method by AOD/ABLH.Finally,compared the esti-mated PM-concentrations with measured value.The results show,compared to the method by AOD/ABLH,the result of estimate PM-concentrations by new method was better.Correlation coefficient between surface extinction by new method with measured PM2.5 and PM10 concentrations is 0.8 and 0.62 respectively.Compared the estimated PM-con-centrations by the two kind of methods with measured value, degree of accuracy of the new method is better.%从2013年5月至11月中筛选激光雷达和MODIS大气光学厚度（ AOD）资料，提出一种基于激光雷达反演大气气溶胶消光系数廓线，结合MODIS大气光学厚度资料，估算地面颗粒物质量浓度的方法；将该方法与AOD／大气边界层高度（ ABLH）方法进行对比，最后将估算的颗粒物浓度与实测值进行比较。研究表明，该方法估算地面颗粒物浓度效果好于AOD／ABLH方法，与实测PM2．5和PM10浓度相关系数分别达到0．8和0．62。两种方法估算得到的地面颗粒物浓度与实测值比较，新方法估算的结果准确性更好。
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