Glutenite bodies in the faulted basin exhibit a complex genetic type， resulting in highly heterogeneous reservoirs and presenting significant challenges for reservoir prediction. This study systematically investigated the lithofacies types and reservoir characteristics of glutenite bodies in the Lower Submember of the 3^rd Member of the Eocene Shahejie Formation（Es₃ ^L）of Yidong Fault Zone by comprehensively utilizing data from cores， cast thin sections， well logging， and log. It also identified favorable reservoir control factors and proposed a“ ternary control reservoir” model suitable for the glutenite reservoirs in the study area. The results show that the formation and development of favorable reservoirs of glutenite bodies in Es₃ ^L of Yidong Fault Zone are mainly controlled by the combination of sedimentary microfacies， carbonate cementation， and organic acid dissolution. Sedimentary microfacies control the macroscopic distribution of reservoirs； diagenetic cementation exacerbates reservoir heterogeneity， and acid fluid dissolution in the late stage improves reservoir quality. Tectonic activity and the continuous fluctuation of the lake level control the transformation of the sedimentary environment. There is a transition from the low-angle retrogradation type of nearshore underwater fan sedimentation to the high-angle progradation type of fan delta from bottom to top. The grain sizes of the fan delta reservoirs are moderate， and the reservoirs are well sorted， with low mud content. Original physical properties of the underwater distributary channel in the medium-thick layer are good. The differential cementation of calcite in the early diagenetic stage enhances the heterogeneity inside the reservoir， resulting in the densification of the reservoir at the bottom of some river sand bodies. In addition， oil and gas charge in the late stage has a strong effect on the dissolution and transformation of weakly cemented reservoirs in the early stage， resulting in better physical properties in the middle of single-stage river sand reservoirs. In summary， it is believed that overlapping development areas of multi-stage distributary channels on the oil and gas migration paths are favorable exploration areas.