In Wutai Mountain heavy pollution area formed by ancient and modern local mining, hydrochemical survey can not only delineate ore-prospecting target areas rapidly and effectively, but get rid of man-made pollution as well. Compared with routine point and line type survey, the "planar" rock survey technique of multiple subsamples combination considerably reduces the number of samples required for analysis, and greatly cuts down the cost. What is more important is that this technique can trace sources of regional geochemical anomalies, evaluate prospects of regional geochemical anomalies, and delineate sectors for detailed investigation of ore resources. Tests show that in Wutai Mountain area there exists genetic connection between the Yanshanian intermediate-acid complex and mineralizations that spatially exhibit zonal distribution of multielement anomalies of Mo, Cu, Au-Cu, Pb, Zn-Au and Ag centering around the complex body. Such a distribution pattern correspondingly indicates porphyry mineralization—contact metasomatic mineralization—postmagmatic hydrothermal mineralization and their zonal distribution.