Abstract: Using TM and SPOT for Three Gorges Reservoir Area images(Hubei Province region) as data source, according to the characteristics of plenty of spectrum of TM image and high space discrimination of SPOT, by fusing TM and SPOT and utilizing image processing software ERDAS, the land utilization was classified, and the calculation of available plant coverage was performed. Based on geographic information software ArcGIS8.1 and 1∶50 000 digital relief map, DEM was generated and slope extracted. Considering the plant coverage degree, slope and land utilization classification and using the criterion made by water conservancy department as calculation basis, the space analysis of varieties of water and soil loss was done, the regionalizations of water and soil loss for every counties for different intensities were plotted respectively. The research results show that forest lands, garden lands and terraces, which mitigate water and soil loss, are increasing. But the areas of slope in field land and grass land where water and soil eiosion is serious are decreasing. By comparing the intensities of water and soil loss in 1986 with that in 1999, the final results indicate that the intensities of water and soil loss in four counties are all mitigating., Yichang county ranks first, and Badong county the last.