The utility model belongs to a three-times distance-increasing hydraulic blowout preventer moving apparatus for a petroleum drilling machine, which comprises a movable pulley block (1), a fixed pulley block (2), an inversion pulley wheel (4), a half pulley wheel (13), a lifting rope device (7), a hydraulic system (9), an oil cylinder bracket (11) and a lifting oil cylinder (12), wherein the half pulley wheel (13) is fixedly connected with the movable pulley block (1), and the movable pulley block (1) is fixed at the head of a piston rod of the lifting oil cylinder (12); one end of the lifting rope device (7) is fixed on the half pulley wheel and orderly bypasses the half pulley wheel (13), the fixed pulley block (2) and the movable pulley block (1) and can be drooped downwards after inversed through the inversion pulley wheel (4); the inversion pulley wheel (4) and the fixed pulley block (2) are fixed on the oil cylinder bracket (11). As the half pulley wheel is increased and rope heads are fixed on the half pulley wheel, the purpose that the lifting height increases 25.2 percent can be achieved under the premise of the external shape and the weight of the blowout preventer moving apparatus of the utility model are slightly changed. The utility model solves the problem of insufficient lifting height in lifting operation of the blowout preventer, so the lifting operation of the blowout preventer can be safe, convenient and quick.