geometric dimensions and conductivity of fracture networks，which is of great significance for the optimal deployment of well patterns and the optimization of fracturing parameters in shale gas wells. A true thickness-domain horizontal well-controlled complex structure modeling method was established in response to the complex geological characteristics caused by multiple factors，such as the structure and stress of normal pressure shale gas wells in complex tectonic regions. A well-seismic combined natural fracture network prediction method was formed based on the correlation between seismic attributes and drilling dynamics，such as mud loss and overflow. Local densification was used to characterize the deformation characteristics of the reservoir under complex stresses. The simulation research on the extension of the fracture network was carried out. The research results show that the magnitude and orientation of in-situ stress will affect the extension morphology of the fracture network. The development of natural fractures is conducive to forming complex fracture networks. The fluid injection intensity plays a key role in increasing the length of hydraulic fractures and expanding the stimulated volume. The sand addition intensity determines the effectively propped fracture length and conductivity.Moderately reducing the number of clusters per stage can effectively increase the single-well controlled reserves and development benefits of normal pressure shale gas wells. During well placement，reducing the angle between the horizontal section and the minimum principal stress and selecting the natural fracture development area with moderate in-situ stress is the prerequisite for achieving high production in normal pressure shale gas wells. During fracturing，increasing the sand addition intensity and fluid injection intensity and reducing the number of perforation clusters are effective ways to increase the stimulated volumes and form complex fracture networks. Through the integrated analysis of geology and engineering for factors affecting the fracture network extension，it is suggested that the fracture network volume and the single-well productivity be increased and the development benefits of normal pressure shale gas reservoirs be enhanced.