Abstract:Agricultural non-point source pollution is mainly induced by the excess matter accumulated in soil,when the exogenous substances are beyond soil environmental capacity and nutrients are beyond the need of plant growth. Based on the analysis of soil physical and chemical properties in different land uses,clay particle content,pH,organic matter,total nitrogen,total phosphorus,hydrolysis nitrogen,and available phosphorus were chosen as indexes and forest soil was taken as control. Grey relation principle and method were used to analyze soil pollution and its distribution in different land uses,different planting patterns,and different distances from residential areas. Analyses indicate that by soil pollution ratio,cultivated lands are in the order of paddy fieldvegetable landupland and soils are in the order of farmland pollution with two-maturity per yearsignal harvest. The shorter distance from a residential area,the heavier soil pollution is.