Abstract: The paper describes a LUT method for retrieval of the ground surface reflectance along coast zone and island with MODIS image. Simulation of the AHMAD radiative transfer model on determination of the aerosol optical character with water pixel of MODIS image. Simulation the aerosol optical character and the 6S model on computing of the LUT about the ground surface reflectance. Using the interpolate method to retrieval of the ground surface reflectance along coast zone and island with the LUT, aerosol optical character and the MODIS image. The LUT method is applied to determine the ground surface reflectance in XIMEN'S zone from the MODIS image. We analyzed the determination of result and found its expectation error.