It is thought that serious soil erosion of Huangshan city is resulted by natural and social environment : the former including broad distribution of granite and much precipitation,the latter including fault of macrodecision,deviation of value choosing,and sharpen of man -land contradiction. Therefor,in order to restore and reconstruct agriculture ecological environment of the mountain area,people in the district must intensify consciousness of preserving agriculture ecological environment,adjust industrial structure,improve mode of production,and carry out soil and water conservation measures.