Abstract: To improve the efficiency of gas extraction and drainage in other seam, and explore suitable hydraulic punching parameters of 3^# coal seam located in Lu’an Mining Area, this paper comparatively analyzed the gas extraction effect of through beds holes by different punch coal quantity and obtained that the reasonable hydraulic punching coal quantity is 0.15 t/m. Combined with construction technology and geological conditions of hydraulic punching, this paper got the best punching pressure of 12 MPa and the best punching duration of 15 min/m, which matched with the reasonable hydraulic punching coal quantity and formed a set of suitable technical parameters of hydraulic punching in 3^# coal seam.