Abstract: In Carboniferous and Permain Period, Junggar Basin was growing a rift depositional basin under the structural mechanism of outside compression and inside tension The Permian System possessed good hydrocarbonforming conditions, and that Mesozoic anci Cenozoic strata overlapped on this strata turned the original fault belts in the basin margin into hidden paleothrust fault belts. It is possible that Karamay-Wuerhe fault belt converged in deep and Dalbute deep fault composed a y-like structure. Along the fault belt, there were magmatic intrusion and extrusion. A lot of unconformities, diluvial sandstonecongomeratic bodies, stratigraphic denuding and overlapping belts, bedrock fault blocks and volcanic rocks occurred in the Permian, Triassic and Jurassic System in the fault belt formed many strati graphical and structural traps, which provided good passages and Location for the hydrocarbon migrating and gathering, and formed a large hidden thrust fault hydrocarbon accumulating zone. The purpose of this paper was that new hydrocarbon bearing areas should be developed according to this idea.