Abstract: Junggar basin is one with abundant hydrocarbon resources,low degree of exploration and great potentials for oilprospecting. For further petroleum exploration, its wedge-like structure with shallow or thin strata in the north and deep or thickstrata in the south and regional monoclinal structure would be the realistic domains by their determinants for the fact that thesubtle trapping oil-gas reservoirs such as low -amplitude anticline,faulting-lithologic and stratigraphic-lithologic types are primarilydeveloped in middle- and shallow. -buried Jurassic-Cretaceous in the hinterland of Junggar basin; its complex superimposed struc-tural belts shaped by intense thrusting and compresso-shear actions would be the strategic breakthrough domains; while the deep-buried large -scale structures of Carboniferous to Triassic in hinterland of the basin should be the important successive domains. Inaddition, Junggar basin has a characteristic of multiple incremental peaks in oil-gasreserves or OOIP/OGIP. In recent 10 years,much more reserves have been found out from the subtle reservoirs and the middle-deep reservoirs.Hence subtle reservoirs havebecome major targets for further hydrocarbon exploration in Junggar basin.

Key words: Junggar basin, oil-gas field, exploration, play, structure, trap