On the basis of systematic synthesis, and study on the recent comprehensive geophysical-geochmical data, such as seismic, gravimetric, magnetic, electric, comprehensive logging, radiometric survey, this paper divides the second-order tectonic units of the basement of Mezo-Cenozoic sedimentary basins, the structure and basement lithology of sedimentary basims, and ascertains the sequential structre, occurrence depth, thickness and spatial distribution of the basin cover, and analyses the uranium source condition of the basement and provenance area, and the uranium content of Cenozoic strata, as well as the mobilization and migration of uranium in Cenozoic cover.