This chapter discusses how spatial information techniques can be used to predict and evaluate regional soil erosion. The study, carried out in central China, identified sediment discharge, precipitation, soil composition, gully density and land use as the controlling factors of regional erosion. The authors found that soil erosion can be assessed and predicted quantitatively at a regional scale; that quantitative evaluation can be used to study and describe the soil erosion mechanism at the macro scale; and that soil erosion at the national or provincial scale can be rapidly surveyed using remote sensing, geographic information systems (GIS) and erosion modelling.