Relatively good result has been achieved in the application of gravity, magnetic and electric integrated exploration technique to the western part of Qaidam basin. Regional exploration has revealed that the basin basement is divided into southern and northern parts, and this plays a strictly controlling role in the fault distribution and structure development. The object exploration has delineated the deep structure in Oil-Sand Mountain (Youshashan) and led to the discovery of a few new structures in the oil and gas prospect area.