The Dongshan Pb-Zn deposit in Shidian, Yunnan belongs is the component part of Baoshan anticlinorium in structure. There are many ore occurrences along the NS fault in this area. According to the correlation analysis of trace element, the element assemblage in strong relation with Pb-Zn is W-As-Sb. Basing upon the cluster analysis, the correlation sequence from strong to weak is as follows, W→As→Sb→Cd→Hg→Ag→Cu→Au→An.Owing to the comprehensive characteristics of geology and element, we think, in the N section of Dongshan, the element precipitation can be divided into 3 stages in rough. The assemblage of main metallogenetic stage is Pb-Zn-W-Cd-As-Sb-Ag-Hg, which has the guide significance in the prospecting in this area.