Objectives: In recent years, a lot of oil and gas resources have been discovered in the deep clastic reservoir of Tabei Uplift in Tarim Basin. The study on the main controlling factors and distribution of the formation of deep quality reservoirs has been a key issue in the exploration of deep oil and gas.Mothods:In this paper, The main techniques used include core observation, particle size analysis, common thin section, cast thin section, cathode luminescence thin section, and the characteristics of deep Baxigai formation in Yingmaili area of Tabei Uplift were studied.Rusults:The results show that the Baxigai formation has the characteristics of strong sedimentary hydrodynamic force, less heterogenous base content, insufficient sandstone compaction, and the cementation mainly calcite cementation and dissolution development.Conclusions: On basis of analyzing the control action of sedimentary and diagenetic conditions for property of deeply buried clastic reservoirs, it is believed that there are three main reasons for the formation of high quality deeply buried reservoirs. First, good sedimentary conditions provide a foundation for high quality deep reservoir. Secondary, because the compaction is not insufficient, let the deep reservoirs have high intergranular volume (IGV), and it provides conditions for deep reservoirs to form high porosity. The reasons of insufficient compaction are that the cement formed in the early stage can resist the vertical effective stress and short buried time. Third, the dissolution of a large amount of calcite cement plays an important role in the formation of high quality deep reservoirs.