Abstract: Through combining requirements of soil erosion control work with the grid results of soil erosion, the accurate identification, positioning, and cutting of soil erosion vector suitable for control could be achieved, which is helpful to promoting application of dynamic monitoring of soil and water erosion.We take Lingchuan County, Guilin City as the research area, propose a method of extracting soil erosion vector based on layered multiscale segmentation, and accurately identify soil erosion vectors in the research area.The results show that the layered multiscale segmentation method achieves a good balance between soil erosion grid results and land use vectors, the accuracy of soil erosion vector based on layered multiscale segmentation method reaches 90%, and has advantages such as accuracy, efficiency, and easy application compared to traditional methods.The extracted vectors can directly support the subsequent soil erosion control work.The research results can provide basic data and decision-making references for improving the quality and efficiency of comprehensive management of Lijiang River Watershed, and also provide methodological references for the implementation of extracting soil erosion vectors nationwide.