Abstract: In this paper, a detailed investigation of the Wuding River Basin in the middle reaches of the river left bank monitoring area of agricultural production base of forestry and the main agricultural crops in, choose different topographic structure (slope, terrace and dam), different measures configuration (arbor, shrub) and other 10 kinds of agricultural land into land type, soil physicochemical index monitoring, and the monitoring results are analyzed with two horizontal and vertical level, find all kinds of index of each class there are the trend of degradation of different level, and proposes 3 measures to solve the problem.