The significance of the research on uplifting and evolution of the L liang mountain during Meso—Cenozoic lies in its importance to restore the eastern sedimentary boundary of the Ordos basin. Furthermore, this study also is an important aspect to discuss the evolution and breakup of the North China Craton. The thoughts to research on reformed basin and basin—mountain coupling are followed in this paper. Based on the study of the geologic evolution preMesozoic, the structural deformation, magmatism and the original sedimentary framework in the Mesozoic, the coupling relationship with the neighboring graben in the Cenozoic and so on, combined with the fission track dating and modeling, it's suggested that the study area was a part of the Ordos basin, and experienced subsiding—eroding processes similar to the residual Ordos basin in the Mesozoic. The largescaled uplifting of the L liang mountain took place after the Late Cretaceous. It can be divided into three stages, that is slowly uplifting (100Ma～21±2Ma), accelerated uplifting (21±2Ma～8Ma) and intensive uplifting (since 8Ma). The uplifting and evolution of the L〖AKu¨D〗liang mountain during the Meso—Cenozoic, the uplifting and dying out of the Ordos basin and the development of the adjacent grabens controlled by the uniform regional dynamic setting, mainly related with the the movement and evolution of the Pacific tectonic domain, while affected by wider regional geodynamic setting simultaneously.