Abstract: The basinal source rocks of Cambro-Lower Ordovician and Jurassic limnetic source rocks occurred in Kongquehe areaof Tarim basin appear in form of multiple oil-gas assemblages and zonal distribution of local structures, with process of multi-stagehydrocarbon accumulations and deconstructions.The existing reservoirs were shaped in period of Late Y anshanian and Himalayanmovements. The complex petroleum system is proved by continuously exploratory results. The study shows that the structural beltsin N-W trend situated in hydrocarbon-generated center of Jurassic and secondary hydrocarbon-generated superimposed area ofCampro-Lower Ordovician possess greater potentials for petroleum exploration.

Key words: Tarim basin, Kongquehe, petroleum system, hydrocarbon generation, hydrocarbon migration, hydrocarbon accumu lation