With the objective of revealing the fracture tectonic characteristics of the earthquake, we set up deep seismic reflection detection lines to obtain deep seismic reflection profiles with a high signal-to-noise ratio and high resolution, and use the rich reflection seismic response on the profiles to identify the crystalline basement, Moho surface morphology, deep and shallow crustal tectonic characteristics within the detection range, especially the location of faults in the depth range of the middle and upper crust and their spatial spread, and analyze the crustal structure and deep and shallow tectonic relationships to provide a seismological basis for studying the tectonic background of the earthquake, establishing a fine crustal structure model of the earthquake area, analyzing the deep dynamics of the earthquake, and providing basic support for post-disaster reconstruction.