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Based on well drilling and logging data, by using the genetic stratigraphy and high resolution sequence stratigraphic theory, the sequences stratigraphy of Chang6 Reservoir in Hulangmao Area of Changqing Oilfield was analyzed, five mid-cycles were divided, isochronous stratigraphic framework was established in the study area, and single sandbody was depicted on the basis of the study. Superimposed, labyrinth and isolated types of sandbodies were summed up. Geological modeling was carried out for Chang6-1(1) subzone. Seeing from the simulation result, the property of underwater distributary channel microfacies is higher, and its porosity is ranged mainly between 12% and 14%; the property of estuarine bar is better, and its porosity is between 11% and 14%; the property of other microfacies is poor, and its porosity is between 5% and 10%.