Abstract: The CCD sensors on board HJ-1A/B satellites launched by China can capture images with high spatial and temporal resolution,which makes them have great potential in quantitatively monitoring the water quality of inland lakes by remote sensing technologies.The atmospheric correction problem is the first important issue to be resolved.With the assistance of quasi-synchronous Terra/MODIS aerosol data,the HJ-1A/B CCD image on October 24,2009 was done the atmospheric correction processing using FLAASH model.The atmospheric effects have been effectively removed,and the atmospheric correction method worked well at the red and green bands with relatively high remote sending reflectance,while it worked poorly at the near-infrared and blue bands with relatively low remote sensing reflectance.It may be related with signal to noise ratio and land adjacent pixels effect at different bands.This study can provide reference for the atmospheric correction of inland lake HJ-1A/B satellites CCD images.