Abstract: The middle part of Inner Mongolia Plateau was got the very attention of many researchers and local governments because of its important geographical position.One of the most important reasons is that it is the region of serious wind erosion.And for this reason,this area was chosen as case study region to evaluate the soil wind erosion.In this paper,a wind erosion risk evaluation model was established by applying of geography information technology(GIS) and analytic hierarchy process(AHP) method to assess the wind erosion risk in this region.A series of wind erosion risk datasets from 2000 to 2008 were then gathered in this study region to analyze the spatial distribution pattern and the temporal process of wind erosion risk in detail.Then,the driving mechanism in wind erosion process,including vegetation coverage,land use,meteorological factors,were analyzed deeply based on the common senses and existing wind erosion model.The main convolutions are as follows: First,from the southeast to the northwest,the wind erosion risk of study area gradually increased.Except the year of 2005,the general trend of wind erosion risk was falling during the whole study period.Second,the change of land system had little impacts on soil erosion risk because of the slight changes of land use and land cover in whole study period.Third,the continuous decline of wind energy intensity and the stable rising of NDVI were the leading factors to decline the wind erosion risk during 2000 to 2008;while the increase of soil dryness is the key driving forces of all 6 factors to increase wind erosion risk in 2005.