Abstract: In this paper,the author proposes the prespecting model of direct cyrrent IP “medium high-medium low-fast-incorrect” by consolidating and studying some of IP datums that he collected during working in the west of luan chuan county In recent years.Analyse certain question that claim attention in application of direct current IP to prospecting Pb-Zn ore.resolve the distinction betwen Pb-Zn ore and other mineral commodity,achieved the good results of prospecting.