Based on RSGIS technique and quantitative analysis method and fractal model. We can reveal the main characters and dynamic process of the pattern of land-use in arid area. Our conclusions are as followings: (1) In Wuwei city the types of land-use were simplex, the density of land-use patches was small. (2) From 1995 to 2000 the diversity of the pattern of land-use had a little increase, while the dominance decreased comparatively. The fragmentation difference of all kinds of land-use was big. (3) In the terms of the simulative result with fractal model, the nature land-use influenced lower by humankind have more complexity than man-power land-use, the stability is reverse, The residential area and independent mine industry, water area were the most stable and simple land-use, while the farmland and grassland were the most complicated and unstable land-use. In the timescale the complexities of almost all land-uses in the pattern of land-use were increased while the stabilities were depressed. (4) The main factors that effect and control the pattern of land-use were complicated, there were three main factors region background, nature conditions and human activities. We should adopt reasonable measures to prevent the process.