Abstract: Great breakthroughs have been made recently in the exploration of hydrocarbon in bedrock reservoirs in China Seas, such as the Bozhong 19-6 condensate gas reservoir, the Yongle 8-3-1 bedrock oil and gas reservoir and the Bozhong 13-2 oil and gas field, which prove that bedrock oil and gas reservoirs have great potential in offshore China. Up to now, many high-yield bedrock oil and gas fields have been found in the Bohai Basin, Beibu Gulf Basin, Qiongdongnan Basin and Pearl River Mouth Basin. The bedrock hydrocarbon reservoirs in China's sea areas are characterized by wide distribution, multiple layers in vertical sequence, changing lithology and multiple types. As observed, there are four sets of major reservoirs: the Precambrian metamorphic rocks and migmatitic granite, the Paleozoic carbonate rocks, the Mesozoic volcanic rocks and granite intrusions and the Mesozoic clastic sequences, among which the Precambrian metamorphic rocks and Mesozoic granite intrusions dominate. The bedrock oil and gas reservoir is the kind of bedrock reservoir filled by later generated hydrocarbons, and their formation is controlled by many factors, such as source rocks, tectonic activities, reservoir properties and sealing conditions. On the basis of previous researches, it is suggested that the future exploration of bedrock oil and gas reservoirs in China's sea areas should focus more on the following six aspects: the residual mountains in the Bohai basin; the local uplift in the northeast of the eastern depression of the North Yellow Sea Basin; the uplifting belt of the South Yellow Sea Basin; the low uplift in the East China Sea shelf basin; the Weixi 'nan Sag in the Beibu Gulf Basin, the Huizhou Sag in the Pearl River Mouth Basin and the Songnan Low Uplift in Qiongdongnan Basin; and the Zhongjiannan Basin and Wan 'an Basin in the southern South China Sea.