Abstract: Gucheng area is a major field for petroleum exploration. In recent years, discoveries have been obtained in multiple wells with dolomite developed in the central and western parts of Gucheng area. However, the unclear distribution law of gas reservoirs restricts the exploration deployment in the near future. Based on the analysis of regional stress field, 3D continuous seismic data acquired in recent years are used to finely interpret the faults guided by 3D characterization results such as structural guidance filtering and extraction and analysis of seismic attributes of the most positive curvature. By combining with the simulation experiment, the control effect of strike slip faults on dolomite gas reservoirs in Gucheng area is analyzed. The study result shows that five groups of strike slip faults in NEE, NE, NNE, NNW and NW directions were developed in Gucheng area during the Early Caledonian, Middle Caledonian, Middle Caledonian-Early Hercynian,Indosinian and Yanshanian-Himalayan. Among them, fault groups of NE and NNE trending have intensive activities and large number, with an included angle of about 40°, forming a stereoscopic network fault system in space. Due to the differences in lithologies, lithofacies, and karstification conditions, two types of gas reservoirs are developed in the dolomite deposition area in the central and western parts and the limestone deposition area in the eastern part in Gucheng area, namely the quasi layered lithologic gas reservoir controlled by structural settings and “vertical plate” gas reservoir in fault karst with unique spatial style, which require different exploration strategies such as characterization technologies and well type, laying foundation for the benefit exploration in Gucheng area.