This paper distinguished three phase of deformation since Mesozoic along the northern piedmont of the Bogda Mountains, based on carefully structural observation in field, image satellite and previous published seismic profiles. The first one is the Cenozoic thrust structure and related folds, which is caused by the far-effect of the India-Eurasia collision. The second deformation is characterized by the wide wave-length folds during the boundary between the Late Jurassic and the Early Cretaceous. The third deformational phase probably related to the inception of the uplifting of Bogda Mountains. It shows intensive deformation within the Upper Permian. These results suggest that Bogda Mountains has the characteristics of multi-phase uplifting, mainly caused by the collisions of different small blocks at the southern edge of Asia.