Abstract: In order to study the loss of soil nutrients caused by wind erosion and the reason and mechanism of soil desertification, taking the typical agro-pastoral ecotone bare tillage land of northern foot of Yinshan Mountain in Inner Mongolia as the study area, saltation soil sediment was collected by SCC-6 sediment collector to conduct screening and weighing.In the soil and collected soil sediment, the main nutrient contents and part of metal elements were determined with chemistry titration and flame atomic absorption spectrophotometer. Through analysis, the distribution of sediments chemical component content and total mass of each chemical composition along vertical height of the soil and the relevant relationships of wind erosion extent with soil chemical composition and particle size were obtained. Through regularity analysis of distribution of chemical components, wind erosion was further validated as the main reason of siol fine particles loss, which is the main factor on causing poor soil.