Abstract: Based on the seismic data of high signal?to?noise ratio, this paper presents the structural geometry analysis of the structural deformation feature and characteristic parameters in Xishan anticline by means of fault?related folding theory and the kinematic simulation of the geometry deformation in terms of structural wedge and fault propagation fold modeling. The results show that Xihan anticline can be divided into shallow structural layer, middle structural layer and deep structural layer. The shallow structural layer was influenced by Late Yanshan-Himalayan orogenic movements and formed at the beginning of the Cretaceous and ended in the Holocene. The shallow structural deformation was controlled by the breakthrough fault developed on the bottom detachment of the Jialingjiang formation. The middle structure was influenced by Indosinian movement, shaped in Early Triassic and ended in Late Triassic, with structural wedge and fault?propagation fold. The deep structure was influenced by Caledonian movement and formed detachment fold. The Indosinian structural wedge and recoil faults, the Late Yanshan-Himalayan thrust faults and late denudation are the factors for the present tectonic framework in Xishan area