Workpiece drilling devic

The invention discloses a workpiece drilling device. The workpiece drilling device comprises a base; a first support rod and a second support rod are separately and fixedly connected to two sides of the top surface of the base; sliding blocks are correspondingly connected onto the first support rod and the second support rod in a sliding manner; a screw is arranged at the side end of the second support rod; and the bottom end of the screw is embedded in the base to be fixedly connected with a first rotating block. When the workpiece drilling device is used, if the surface of a drilled workpiece is flat, the screw can be directly twisted to rotate, so that a screw nut drives a pressure plate between the two sliding blocks to be attached, pressed and fixed to the workpiece; and when the surface of the drilled workpiece is convex, a mold corresponding to the pressure plate can be installed on the top surface of the pressure plate, a first rotating rod is rotated to drive the pressure plate and the mold fixed at