With the continuous discovery of large-scale integrated oil and gas fields such as BZ26-6 and BZ19-6, the metamorphic buried hills in the Archaeozoic era of the Bohaiwan Basin exhibit broad exploration prospects. Based on the dissection of typical oil and gas reservoirs as well as well logging and seismic data, this paper analyzes the distribution and development characteristics of oil and gas reservoirs in the metamorphic buried hills of the Archaeozoic era in the Bohaiwan Basin, classifies the types of oil and gas reservoirs, summarizes the key controlling factors for hydrocarbon accumulation, and points out the direction for further exploration. The results indicate that the distribution of oil and gas reservoirs is concentrated in the eastern part of the Bohaiwan basin and is significantly controlled by Cenozoic strike-slip faults. These reservoirs are characterized by deep burial, diverse lithologies, low porosity and permeability, normal to weak overpressure, and complex oil-water relationships. Based on the structure characteristics and source-hill relationship, oil and gas reservoirs are classified into two categories and four types: source-hill contact type, including source-side type dominated by lateral migration of oil and gas and source-underlying type dominated by downward and lateral migration of oil and gas; source-hill separation type, including source-external type dominated by unconformity transportation and source-upper type dominated by fault transportation. Among them, the low position source-underlying type and median position source-side type have greater exploration potential, followed by the high position source-external type and high position source-upper type. Extensive source-reservoir contact area, sufficient hydrocarbon driving force, good sealing capacity, and fault-controlled reticulate reservoirs are the four key factors controlling the hydrocarbon accumulation in the buried hills. In the future, emphasis should be placed on the source-underlying and source-side type buried hill structural belts within depressions such as the Jiyang, Bozhong, and Liaohe Depressions, as well as the adjacent concave-convex uplifts, and the internal structures of source-upper type and source-side type buried hills in steep fault zones such as the Jizhong and Huanghua Depressions.