Abstract: Through detailed analysis of the structure,source rocks,reservoir rocks,cap and other aspects of the Upper Paleozoic,the upper Paleozoic reservoirs are of good reservoir forming conditions,and the trap type is the lithologic trap.Based on the relationship between hydrocarbon source rock and lithologic traps,the combination of upper Paleozoic reservoir is divided into a source close to the type and source type categories.Combined with previous studies,the Upper Paleozoic gas reservoir model has been established.Reservoir studies indicate that the distribution of lithologic gas reservoirs Fuxian areas is mainly affected by hydrocarbon source rocks and reservoir rocks distributed control.The northeast of Fuxian region is the development zone of the source rocks and multi-laminated sand-based,and it is a favorable target for exploration evaluation.