In the piedmont zone of the Saishiteng Mountain on the northern margin of Qaidam Basin, the thrust-nappe structure is developed, the surface condition is poor and hence the seismic prospecting is difficult. As CEMP method is hardly affected by the shielding effect of overthrust nappe structure and the effect of surface condition, the authors conducted researches on CEMP exploration in this area. In this paper, several methods such as Robust, remote reference technique and static correction were adopted in data preprocessing to suppress noise and improve data quality. Through the comprehensive utilization of Bostick, CMI and 2D continuous medium inversion, the effective anomaly was detected obviously, the structural characteristics of overthrust nappe was unveiled clearly, and the spatial spread of lower wall strata around the thrust-nappe fault and the contact relation between the mountain and the basin were determined in this area.