The invention discloses a wood processing drilling device which comprises a platform for fixing wood blocks, a drill bit and a cutter. The drill bit faces the platform and is clamped to a rotating claw, the rotating claw is connected with a motor through a rotating shaft, the rotating claw is installed at one end of a cylinder, the cylinder is connected with a lead screw through a connecting block, the lead screw drives the cylinder to stretch out or retract back in the direction of the drill bit, a cutter installing base is arranged on one side of the cylinder, a sliding rail is arranged at the position, located on one side of the direction of the drill bit, of the cutter installing base, a cutter rest is arranged on the sliding rail and is connected with the cutter, and the direction ofthe cutter is the same as that of the drill bit. By means of the wood processing drilling device, and the problem that an existing wood processing drilling device is complex in structure, high in energy consumption and high in cost can be solved.