Abstract: The northeast region of the Tarim Basin underwent two maior sedimentary stages ; the Sinian to Early Per mian platform and the Late Permian to Mesozoic and Cenozoic terresirial oasin. There were four sets of marine formations,one paralic formation,one terresttial coal bearing formation which generates hydrocaroons, two fluviolacustrine gyp-sum bearing formations, and Quaternary accumulation. ln the region, there were plenty of source rocks, well-de-veloped caprocks and reservoits,hydtocar o0n generation siage was well natched with lrap formation. Many kinds of il andi gas reservoirs of the narine, paralie and terrestrial facies were formed. The region has good conditions of petroleun geology,and is one of the most important replacing arcas in the development of the oil and gas industry.

Key words: Nor theast region of Tarim Basin, Sedimentary charicteristics, Platform, Terestrial basin, Petroliferous piospects