According to the ejective folds developed in the study area, two geometry models including ejective fold and sine-curve shaped fold are suggested, and the finite element method is used to simulate the distribution of stress fields in different structural parts of folds. It is indicated that the direction of stress vectors are parallel to the formation occurrence. The outer sides of folds are tensile stress concentration and the inner sides of folds are compressive stress concentration, which are distinguished from a middle compromise boundary where neither compression nor tension is obvious. Based on the observation of field outcrops and drilling cores, three types of structural fractures exist in Western Hubei-Eastern Chongqing area. They are the bedding fissures developed in ductile rocks with multiple layers, the high-angle shearing fissures developed in brittle rocks in the inner sides of synclines and outer sides of anticlines, and the mesh cracks associated with bedding fissures and high-angle fissures in multiple-layered ductile rocks in the inner and outer sides of anticlines. This feature is well coincident with simulation results, which can be reasonably interpreted by the results of stress fields and brittle-ductile property in sedimentary formations in mechanism of structural fractures. It is suggested that the uplifts in synclinoria are the prospective target of shale gas exploration.