In order to solve the problem that most of micro-pulse lidars cannot obtain lidar ratio (LR) independently, LR from aerosol size distribution and complex refractive index is acquired with Mie scattering theory. Four aerosol robotic network (AERONET) stations that include SACOL station, Beijing station, Shouxian station and Taihu station are used. The LR variation characteristics of seasonal-mean and years′ average values in different regions and aerosol types are analyzed by using LR and Angstrom wavelength index. The conclusions are as follows: LRs in chinese different regions and seasons show complex and different variation characteristics; the LR in Yulin is the least and years′ average value is (36.3±15)sr; LRs are relatively larger in Taihu, Beijing and Shouxian; annual average value of 2008 is smaller than other years in Beijing and there is little variation of years′ average value in other regions. LR and Angstrom wavelength index can distinguish aerosol type and they both increase from north to south in the analysis regions.