Abstract: The deepwater basins in the East Greenland margin is one of the hot spots of global petroleum exploration in deepwater area, but its exploration degree is still low. Based on the latest data of basic geology of the East Greenland margin, we found that main source rocks occur in the Upper Jurassic marine shale of Hareelv Formation and the lower Jurassic deltaic shale of Kap Stewart Formation, The main reservoirs are found in the Middle Jurassic marine sandstone and Cretaceous turbidite sandstone. There are two types of source rock-reservoir-seal assemblages, namely the continental source rock-marine reservoir-marine seal assemblage and marine source rock -marine reservoir-marine seal assemblage. The trap types are dominated by the extensional structural trap, horst block trap, salt dome trap and stratigraphic trap. The East Greenland margin is rich in hydrocarbon. Its reserve reaches about 323.4×10⁸ barrel of oil equivalent, and the undiscovered fields may be up to three hundreds.