Based on the fine reservoir description achievements, we made a systematic summarization of hydrocarbon distribution features in Tongbomiao formation in Tanan sag, and analyzed its major controlling factors. The results show that the hydrocarbon distribution is extremely heterogeneous in different structure zones in Tanan sag. The west and central fracture burial hill belt and the structural transform zone in the middle secondary hollow are the very place of hydrocarbon enrichment and high-production, and its reservoir types mainly include fault block reservoir, fault anticlinal reservoir and fault-nose reservoir. The reserve abundance and oil-production capacity is lower in south and north trough in the middle secondary hollow, and its reservoir types mainly include fault block-stratigraphic oil reservoir, lithologic reservoir and unconformity barrier reservoir. Through the analysis of the main control factors shows that differential structural and sedimentary pattern of the different structure zones controls the formation and distribution of the various reservoir types, the discrepancy of the reservoir facies belt caused by sedimentary facies and diagenism facies determines the reservoir quality and then controls the reserve and productivity of oil, the different hydrocarbon transport system determines the hydrocarbon migration-accumulation rule and controls the formation of three kinds of hydrocarbon heterogeneous distribution models, including outside-source unconformity translocation fault controlling oil-enrichment model, within-source mixed translocation facies controlling oil-depletion model and near-source fault translocation fault controlling oil-enrichment model.