This paper takes Zhangwu County in Keerqin sandy land as an example to study the effect of land use on soil properties in the inter-distributing area of farming and pasturing.The results showed:serious alkalization occured after alkaline grassland has been shifted into dryland for farming,which results in increase of pH and electric conductivity of the soil.When meadow grassland was converted into paddy field,salinization could be well controlled.After forest land and grassland in aeolian soil were cultivated,soil oligotrophication and desertification would taken place seriously.It will be more serious as the increase of forming years.