Dynamic monitoring soil erosion is one of important task in soil and water conservation management. The method and work proceedings of dynamic monitoring soil erosion are expounded supported by remote sensing and GIS through visual interpretation at scale of nation. Based on unchanged classification of second national soil erosion remote sensing investigation, the remote sensing monitor is carried out for national soil erosion at scale 1∶100 000 from 1995 to 2000 and updated its database by comparing two different time images, employing the digital processing technique of remote sensing data, man computer interactive interpretation, vector map editing and area count.