Abstract: Stratigraphic contact relations and regional depositional characteristics imply that the southeastern part of Tarim Basin, like the whole Tarim Basin, has undergone three evolutional stages——Paleozoic platform, Misozoic fault depression and Cenozoic depression.Since early Paleozoic era, five distinct regional tectonic movements have occurred in this area. According to the characteristics of basement depth, deep faults and Stratigraphic thickness and distribution, Southeast Tarim Basin can be divided into two major tectonic units and eight secondary structural units. The prospective hydrocarbon blocks lie to the west of Qiemo.