Based on human-land relationship system, the erosion degree was calculated by  quantification of multi index, and the spatial and temporal soil erosion degree transition tendency in Changting County, Fujian Province was analyzed. The results show that characteristics of concentration and contiguous are existed in erosion distribution, the highest erosion degree is existed in central of Changting County, and gradually decay to the surrounding area. On the other wise, although the uncertainty is existed in transition of soil erosion degree, the soil erosion had improved in the passed 30 years.