Land use change influences vegetation distribution on the earth surface.Vegetation coverage,tinyterrain,physical properties and chemical properties of soil,as well as erosion resistance,lead to an increasingly complex system for mutual responses to land use/cover changes.The research of soil erosion with regard to different land use types is therefore of great importance.In this study,we implemented the universalsoil loss equation to simulate the soil erosion of Southern Loess Plateau based on different land use type withthe technologies of 3S.The results showed that the cultivated land and construction land changed significantly,and 1 123.80km² cultivated land has turned to construction land in the past 25years at southern loessplateau;the construction land has increased 1 238.29km².On the whole,forest and meadow changed little,but they changed significantly in the part of the study area.At he same time,the average soil erosion modulus of southern loess plateau has increased from 11.54t/(hm²·a)to 13.81t/(hm²·a),the peak value ofSouthern Loess Plateau were Gully region of Loess Plateau which were 1 708.52t/(hm²·a),1 584.69t/(hm²·a)in 1980and 2005.the research also shows that the soil erosion is closely related to the spatialdistribution pattern of land cover.In the study area,forest and meadow's were steeper and higher than construction land,cultivated land and unused land,so the latter(construction land,cultivated land and unusedland)'s soil erosion modulus was lower than the former(forest and meadow).The meadow land and forestwere infected by the terrain,which infected the rainfall factors severely.Forest and meadow's average soil erosion modulus were increased 2.34t/(hm²·a)and 7.32t/(hm²·a)respectively.Among all the erosiongrade,above the grade of micro-erosion's area has increased.