A new method that applies the 3S (integrated GPS, RS and GIS) technology was developed for the field check of soil erosion map. Land cruiser and some other hardwares were used as the working platform to obtain and integrate the real-time GPS data with the 3S satellite images and the soil erosion map by using ArcMap software system. The method was proved more efficient and accurate than the traditional inventory method, it could realize an uninterrupted inventory along the road and record field data in a digital form, which is convenient for later use. Furthermore, the method was adaptive to point, line-transect and plot surveys, thus it could be applied well to other kinds of soil survey activities.