Abstract：The basement of the Ordos Basin in the Late Paleozoic inherited the Ordovician palaeotectonics，which was higher in the center and lower in the west and the east，and steep in the west and gentle in the east.Based on a large number of stratigraphic division of drilling wells，the remnant strata thickness maps of each period in the Paleozoic were complied，and its spatial changes reflected the palaeotectonics of the Ordos Basin.Combining the EW and SN comparison profiles of the stratigraphic thickness and the evolutionary profile in the Ordos Basin，the analyses indicate that the deposition of the Benxi-Taiyuan Periods in Late Paleozoic is mainly controlled by the Central Paleouplift，with obvious difference between the east and the west in strata spatial distribution.Until the depositional period of Shanxi Formation，the role of Central Paleouplift turned gradually less important.Differentiation between east and west gradually transfered into differentiation between north and south in stratigraphic distribution，the change in depositional pattern is consistent with the palaeogeographic evolution，showing that the deposition is controlled by palaeotectonics.
