In the paper, the author summarizes various views and modles about the uplifting of the Qinghai-Tibet Plateau, and then based on the features of the Cenozoic deformation and lithosphere fabric, he proposes a new dynamic model for the uplift of the Qinghai-Tibet plateau-the lithosphere deep-level expansion model. The basic view of the model that the intense subduction of the Indian plate beneath tbe Eurasian plate would result in inhomogeneity of the fabric and deformation of the lithosphere and repeated alternations of normal transformation from collision to contraction (gravity inequilibrium) to stretching (isostatic adjustment) and reverse transformation from stretching to contraction. On that basis three orbgen types can be recognized in the plateau: the Himalayan, Gangdise and Kunlun types.