The invention relates to a perforating device, in particular to a perforating device of a hardware block, and aims at achieving the technical purpose of providing the perforating device of the hardware block high in work efficiency and uniform in perforating and makes holes smooth. To achieve the technical purpose, the perforating device of the hardware block comprises an L-shaped plate, a first spring, a slide block, a slide rail, a first guide wheel, a stay wire, a second guide wheel, an electric push rod, a T-shaped plate, a wire winding cylinder, a cam, a fourth belt pulley, a contact plate, a lifting rod, a movable plate, a first motor, a first rotary shaft, a first connecting belt, a perforating drill, a first bearing base, a second rotary shaft, a first belt pulley, a sand blastingcylinder body and the like, and the slide block and the first guide wheels are arranged at the top in the L-shaped plate. The perforating device has the advantages that the work efficiency is high, perforating is uniform, and the holes are smooth; meanwhile, the perforated holes can be polished and are convenient to use, and scraps on the surface of the hardware block can also be swept.