Abstract: By gravity and magnetic data processing of the Haijiao Uplift in the East China Sea Shelf Basin and Combined with peripheral gedogic situation and various geophysical information, the basement depth and lithology of the Haijiao Uplift were studied. Based on the inference of basement lithology, the Mesozoic and Paleozoic thickness were obtained. This provides bases for the further development of hydrocarbon resources in the East China Sea Shelf Basin.