Abstract: Oil and source rock correlation is performed based on geochemical parameters such as biological marked compound and carbon isotope in N depression. It is pointed out that hydrocarbons are generated from source rocks in AJ Formation. Oil and source rock correlation reveals that the geochemical features of oil in the two oil - bearing structures on the central uplifts have good consistency, while the maturity is higher than that of the source rock on the uplift. Therefore, it is believed that the oil currently discovered in the uplift zone come from the hydrocarbon kitchens on each side of the uplift. The favorable structures on each side of the uplift should be the exploration targets in the future.