Abstract: To study the velocity variation, pressure distribution and the influence of different shape fissures on the seepage process of pore-fracture dual media in rock mass, the numerical simulation of seepage of porous media blocks with different fracture shapes was carried out by COMSOL numerical simulation software. The laws of the crack velocity field, the pore pressure field of the matrix block and the seepage of different shape paths are obtained. The results show that with the increase of pressure difference, the velocity field develops fastest along the fracture path, and the fracture becomes the main seepage path; the pore pressure gradient in the matrix block is evenly distributed, and the pressure distribution is continuous in the fractured matrix block, but the bends in the barometric surfaces indicate different flow states in the fracture and the pore; the fracture shape affects the flow characteristics, and the magnitude of the outlet boundary flux of the four types of fractures is: the rounded shape > 135° angle> 90° angle>45° angle. The simulation results are helpful to visually study the seepage law of dual media.