Abstract: Compared with clastic reservoir, carbonate reservoir has strong heterogeneity and complex pore structures, as well as wide distribution range of pore-throat radius and poor relationship between conventional porosity-permeability based on the classification of sedimentary facies zone. Therefore, the modeling method of reservoir petrophysical properties controlled by sedimentary facies is not applicable. By taking the Cretaceous Mishrif Formation in Iraq H Oilfield as an example and using seismic data, well logging, geology, and dynamic performance of oil reservoir, the fine reservoir evaluation and oil reservoir description are conducted, and the internal genetic relationship between petrophysical facies and sedimentary facies is studied on the basis of rock type classification. Then the rock type model controlled by sedimentary facies model is established, and porosity, permeability and oil saturation models are established for different rock types. Following, the static and dynamic information are combined to characterize the distribution of barriers, interlayers and high permeability strips to correct the permeability model. Finally, a 3D geological modeling method for bioclastic limestone oil reservoir is developed based on the hierarchical control of sedimentary facies and rock types. The verification results show that the geological modeling method is reliable and can fully reflect the reservoir heterogeneity, with the fitting rate of each dynamic index reaching up to 65% in the first run of numerical simulation.