Abstract:The multi-target regional geochemical survey has been carried out in Weihai city, and geochemical data of the surface soil and deep soil has been basically obtained. Based on the analysis of geochemical parameters, geochemical base value and background value of the soil geochemical parameters have been determined. Comparing with the variation of soil geochemical base value and background value, it is regarded that most of the elements in this area come from the soil, and human activities have little effect on it. But,C,Cd,Hg,N,P,Corg and other elements have been clearly enriched in the surface soil. It is indicated that the factors,such as hypergene process and human activity have significant influence on the content change and distribution of these elements.