Ultrahigh-pressure drilling machine

The invention discloses an ultrahigh-pressure drilling machine, and relates to the field of drilling machines. The ultrahigh-pressure drilling machine comprises a pedestal, a drilling machine body, a drilling rod, a drilling combination box, a balanced hydraulic station, a balanced oil cylinder and a balanced connector; the drilling machine body is arranged on the pedestal; the drilling rod is arranged on the drilling machine body; the tail end of the drilling rod is provided with the drilling combination box; the balanced hydraulic station is connected to the front part of the drilling combination box; the balanced oil cylinder is arranged on the upper end of the middle part of the drilling rod; the balanced connector is arranged above the balanced oil cylinder; and a pressure gauge is arranged on the drilling combination box. The ultrahigh-pressure drilling machine has the beneficial effects that the ultrahigh-pressure drilling machine is provided with a pressure balanced system, so that pressure on the two ends of the drilling rod is maintained at a balanced state, and differential pressure of the drilling rod disappears; and transmission resistance of each transmission component is reduced, so that the drilling machine can work normally under high pressure, and pressure drilling work on an ultrahigh-pressure pipeline can be realized.