Based on Geographical Information System, the results of simulation on soil erosion in Wangjiaqiao watershed, which is located in the Three-Gorge Reservoir Region, showed that slope arid plow lands contribute mostly to the total quantity of soil erosion and sediment relative to other kinds of land using in the watershed. Then, evaluation and assessment of managements designed to control soil erosion on slope land was performed and indicate that changing into terrace dominates in sediment control, while planting hedgerow exhibits preponderance in soil nutrient conservation and investment recycle. Comprehensively, hedgerow is a better kind of soil erosion management.