Outburst prevention drilling machine booster

The utility model provides an outburst prevention drilling machine booster which comprises a lifting cylinder, a supporting frame, a drilling machine bracket, a booster body and an electric drill, a drill rod is arranged at the front end of the electric drill, the supporting frame is fixed to the lifting cylinder, the drilling machine bracket is fixed to the upper end of the supporting frame, anda sliding way allowing the electric drill to slide is arranged on the drilling machine bracket. The lifting cylinder comprises a first-stage sleeve, a second-stage sleeve and a third-stage sleeve, thethird-stage sleeve is arranged between the first-stage sleeve and the second-stage sleeve, the diameter of the third-stage sleeve is larger than that of the first-stage sleeve and that of the second-stage sleeve, and the first-stage sleeve, the second-stage sleeve and the third-stage sleeve are evenly provided with a plurality of round holes. The steel bars are inserted into the round holes to limit the relative positions