The telluric electromagnetic sounding performed along QB-1 profile fromShiyan of Hubei province to Luoyang of Henan province reflects quite clearlythe geoelectric characteristics of North China platform and Qinling geosynclinalfolded belt that this profile passes through, delineates high-conductive layersin the crust and in the upper mamtle, and reveals two great faults that cutthe deep part of the upper mantle; it is also inferred that the low-resistancebody at the depth of Daping (Songxian county) might be a magma chamber.All these results serve as important data for the study of deep geology.