The invention discloses a perforating device for a food packaging paperboard. The perforating device for the food packaging paperboard comprises a bottom plate, a supporting column, a top plate, an adjusting shaft, a supporting block, threaded parts, a first threaded sleeve, a first sliding groove, a first sliding block, a connecting rod, a lifting plate, a fixing plate and a lead screw. A secondthreaded sleeve is mounted on the lead screw. The two threaded parts are in central symmetry along the adjusting shaft. The spiral directions of threads of the two threaded parts are opposite. A mounting device is mounted on the outer wall of the lower end of the second threaded sleeve through a connecting part. A perforating rod is mounted in the lower end of the mounting device. The overall structure of the perforating device adopts the mechanical principles well known by people skilled in the art, any complex electrical equipment or control system is not used, paperboard perforating operation can be achieved rapidly through simple manual operation, the position adjustment of the perforation rod can be achieved through the lead screw, omnidirectional perforating of the paperboard can beachieved, the paperboard does not need to be moved after being fixed, and the perforating position can be changed just by changing the position of the perforating rod.