Taking the view area of Panzhihua city as an example, the suitability appraisement and regionalization of vegetation rehabilitation was undertaken in the dry hot valley by using GIS technique. Thinking of the importance to vegetation growth and distribution, some factors were considered. They were the elevation, the aspect, the slope degredient, the soil depth and the lithological composition. The weighs and the suitability values of selected factors were given through expert method. Through data dealling, spatial analyzing and model establishing and data handling, the vegetation rehabilitation suitability map was obtained. After that, the value of suitability appraisement was reclassified and merged. The area of Vegetation rehabilitation was divided into five types: suitable zone, less suitable zone, less unsuitable zone, unsuitable zone and extreme unsuitable zone. In the end the map of vegetation rehabilitation was gotten.