Abstract: Three-dimensional high-density electrical prospecting method is featured in low-cost, high-efficiency,rich in information and easy to interpret, the result of which can intuitively display the direction, spatial position and morphology of the target anomaly and is widely used in detection and monitoring of buried fault, Karst, landslide,archaeology, hidden danger possible in tailing pond and other engineering projects. In this paper, Res3Dinv4.0 software was used to study the high-density electric method exploration data collected from Fengxiang County, Baoji City,obtaining the spatial distribution of resistivity in this area. According to the surrounding surface and geological data,the location of seepage passage in the area is inferred, which provides reliable basic data for the study of geophysical characteristics of strata in this area.