Changping Mine 5302 working face was influenced by the southward sloping geological structure of Pangou, the local area of the coal seam was soft and the ground stress was big, which led to the gas pumping and releasing drill holes not in place, and there was a blank area for gas management. The mine adopted hydraulic punching and pressure-augmenting technology, and by adding 17 new boreholes, used high-pressure jet technology over 6 MP to punch holes and created cavities to improve the permeability of the coal seam and optimize the effect of gas extraction. According to the application statistics, the initial gas extraction concentration was increased by 31.25% and the gas pumping capacity was increased by 42.61%, which can effectively solved the problem of gas overrun due to soft coal seam and large ground stress.