According to the apatite fission track analysis of the samples from different parts of Tianshan and its' two piedmont basins,the major uplifts happened in Tianshan can be recovered.Tianshan underwent four uplifting events during the Mesozoic and Cenozoic,each of which covered a different area,namely,1) the early Cretaceous uplift began at ~140Ma and took place in the south,central and north parts of Tianshan,leading to the destruction of the Jurassic peneplanation in Tianshan area;2) the late Cretaceous uplift began at ~96Ma,took place in both Tianshan and its piedmont basins.The uplift height of the area near the Bogda Range in the east is larger than the west;and 3) the Paleogene uplift began at about 46 Ma,happening mainly in the central Tianshan and south Tianshan.It's probably the earliest distant effect of the India-Asia collision.4) The Miocene uplift began at about 25 Ma,limited to the northern margin of the Kuqa basin and the southern margin of North Tianshan-Sjunggar,The erosive volume by lifting was increasing gradually from east to west.