Lake Taihu is the third biggest freshwater lake in China.This study was conducted to establish remote sensing algorithms for the retrieval of suspended solids concentration in Lake Taihu.Reflectance spectral were measured on ¹³th of Nov.2003 by using ASD FieldSpec HandHeld radiometer.Water samples for suspended solids concentration,chlorophyll-a, DOG measurements were collected at the same time.Based on the comparison and analysis of the reflectance spectral, the reflectance of 580nm was found to be sensitive to the SSC, in this band, the difference of SSC can be maximum showed, and the peak height of 810 nm was found to have higher correlation with SSC than other bands and can be used for index of SSC, The significantly correlation between the concentration of suspended solids and the reflectance first-derivative of 840nm was also found in this research by using spectral derivative technology.Through simulating MERIS data based on reflectance spectral, it was found that the 5,12,13band can be effectively used to retrieve SSC.