Ulgoin basin belongs to the Middle Cenozoic volcanic rock area outside of the Songliao basin. For the purpose of investigating the potential distribution of the sedimentary basin and tectonic framework, the utilization of such means as gravity, magnetic survey, magnetotelluric sounding and other non-seismic geophysical methods is helpful. These methods provide the basis for evaluation of the oil and gas resource potential. Based on an analysis of the physical characteristics of rock strata and taking advantage of the gravity, magnetic survey and electrical method, the authors carried out comprehensive interpretation and determined the distribution and tectonic framework of Cretaceous Bayanhua Group and Jurassic morphology. It is pointed out that the Ulgoin rift basin has a good prospect in the prospecting for oil and gas resources.