The invention discloses a drill power system, which comprises a diesel engine (15), a motor A (16), a motor B (17), a compound box, a winch (18), a slurry pump A (19) and a slurry pump B (20), wherein a crankshaft of the motor A (16) is connected with an input shaft A (2); a crankshaft of the diesel engine (15) is connected with an input shaft B (3); a crankshaft of the a motor C is connected with an input shaft C (4); an output shaft A (5) is connected with the winch (18); the output shaft B (6) is connected with the slurry pump A (19); and an output shaft C (7) is connected with the slurry pump B (20). The drill power system has the beneficial effects that: the energy-saving effect is improved remarkably, noise is lowered effectively, and zero emission of oil smoke is realized; and a hydraulic coupler is adopted, so that impact and vibration can be eliminated, high overload protection performance and starting performance are achieved, chain parallel operation is realized, transmission is flexible, and good vibration prevention and vibration insulating effects are achieved.