The distribution of groundwater under different hydrogeological conditions has different geophysical responses to various geophysical prospecting methods. Based on the experimental study of geophysical methods, the authors searched for the Quaternary groundwater in the non-uniform water area of the piedmont gobi, used such combinational means as sounding test beside the well, electric resistivity sounding sweeping, sounding of induced polarization detailed investigation and hydrology electric logging, thus achieving a new breakthrough in the search for water. The change of the (ρ_s) parameter of electric resistivity sounding and the (η_s, S_t, Z) parameters of the sounding of induced polarization are closely related to the lithologic structure of the strata and the degree of mineralization of the groundwater and the distribution of geological structures. The parameters of the sounding of induced polarization are more closely related to groundwater richness.