Abstract: Subdivision of the sedimentary facies is very crucial in the intermediary and later stage of oilfield development. This article provides a new way to subdivide the sedimen- tary facies and takes oil reservoir as the research target. On the basis of the reservoir structure,sedimentary fea- tures,logging data and reservoir heterogeneous,geologic database has been established.By using the 3D visualized technology based on reservoir stochastic model,3D mod- els on hydrocarbon reservoir structure,sedimentary sub- facies and hydrocarbon attribution have been built up, which can be used to verify or modify the subdivision of sedimentary facies,and lays a foundation for numerical simulation.