The fracture is the main flow channel and the important reservoir space of the Jurassic tight oil reservoir in central Sichuan Basin,which controls the distribution and the high yield of oil and gas.The fractures of reservoir are mainly divided into the structural fractures formed by the tectonic stress field and the diagenetic fractures produced in the process of reservoir sedimentation and diagenesis.So the study and prediction of fractures is very important for the search of tight oil reservoir.Based on the study of the characteristics and manufacture methods of complex fracture,the authors constructed a fractured reservoir seismic physical model associated with the actual geological parameters,and carried out the study of three-dimensional seismic acquisition of seismic data,the regular pre- and post-stack processing,a 3D P-wave seismic data based on the establishment of a comprehensive crack model.The results have important guiding significance for the study of the seismic reflection characteristics of the fracture and the fracture zone and the investigation of sensitive properties of the optimal fracture prediction.