Abstract: 1. The total area of the desertified lands of the district in question is 16762.8 km²,making up one fourth of the total area of the Ningxia Hui Autonomous Region.The slight desertification is the predominant type and desertified lands are mainly distributed in north and central autonomous region. 2. The characteristic of desertification harm is mainly exhibited by the surface more and more rough and soil fertility poorer and poorer.The area affected by sand-driving wind is very limited. 3. The result reflecting desertification development is not the same.Different underlying material composition can have different result.The soil becomes sandy in the section of sandy loess while fluvial and lacustrine sediments rocky,and gravelly in the pediments. 4. According to the characteristic of desertification type assemblage and difficulty or easiness of its control,the district in question is divided into three subdistricts and twelve sections.