Fault activities has a profound influence on the formation and evolution of rift basin and hydrocarbon migration and accumulation. Cenozoic fault activity in Suning area of Raoyang sag，Bohai Bay Basin was analyzed using 3D seismic data and well drilling and logging data，and its control on hydrocarbon migration and accumulation was discussed. The results show that Cenozoic fault activities in Suning area are obviously periodic and can be subdivided into several stages. Paleogene fault activities happened at E1k-E2s4，E2s3-E2s2 and E2s1-E3d three periods，the strength of which were from weak to strong generally，and the two most intense fault activities happened at E2s3-E2s2 and E2s1-E3d periods in the study area.Since Neogene，the faults in Suning area moved weakly only at the early stage of N2m. Furthermore，the results show that Cenozoic fault activities in Suning area control hydrocarbon migration and accumulation. It is indicated by the facts that two sets of high-quality hydrocarbon source rocks deposited at the periods of the two most intense Paleogene fault activities and their strong extension effects control the formation of hydrocarbon-rich sags，and the evolution of fault system controls the development and formation of buried-hill traps，and furthermore，affects the evolution of sedimentary facies and distribution of sand bodies. As a result，two hydrocarbon reservoiring modes were proposed. In one mode，the hydrocarbon was generated at Cenozoic and migrated laterally along faults and unconformity，and finally accumulated at Paleogene. In the other mode，the hydrocarbon was generated and accumulated both at Cenozoic with multi sources and multi-phase charging.