Abstract: In order to study the influencing factors of hydraulic punching based on fluid-solid coupling, coalbed gas seepage stress coupling model was established by Comsol Multiphysics in Solid module and Darcy module, and the effect of hydraulic punching factors on coal seam gas drainage is studied. The results show that the effective radius is directly proportional to the punch radius and the drainage time, which is inversely proportional to the initial gas pressure, and the effective radius of porous drainage effect is obviously larger than that of the single hole drainage effect. According to the above research results, it is necessary to select the appropriate punching radius and time parameters of the coal seam based on the actual coal seam gas geological conditions, and optimize the arrangement of holes to achieve the best drainage effect.