Abstract: Three stages of metamorphic tectonic movements took place in the Lower Yangtze region due to the joint action of the Tethys and the Pacific plates from the Middle/Late Triassic to the Early/Middle Jurassic, the Late Jurassic to the Early Cretaceous, and the Late Cretaceous to the Tertiary. They made the Paleozoic basin basements undergo detachable progressive deformations, and formed foredeep basins in the Upper Triassic and Middle/Lower Jurassic. The translational strike-slip of a large-scale fault zone formed pyroclastic pull-apart basins in the Upper Jurassic-Lower Cretaceous. The Upper Cretaceous-Tertiary semi-graben basins, which are arranged in a domino style, are extensional basins formed by lithospheric extension and detachment structures. The three transformations promoted the formation, accumulation and redistribution of oil and gas.