In applicatioa of color infrared aerophoto and combining with ground truth investigation, we worked out the map of soil erosion type (1: 10,000 scale) of Zhifanggou watershd in Ansai County. The map of soil erosion type shows thoroughly the space relationship of the soil erosion type.The detailed area list of soil erosion type may serve for the evaluation and planning of soil and water comprehepsive conservation. The soil erosion intensity of Zhifanggou watershed befor comprehensive control is very intensive erosion type. Through comprehensive control, the soil erosion intensity reduce to medium erosion type.