The invention discloses an air hole pricking device. The air hole pricking device comprises two supporting rods arranged symmetrically. A transverse rod is connected between the two supporting rod through a lifting device. An air cylinder is fixedly connected with the lower end of the transverse rod. A piston rod is connected with the output end of the air cylinder. The end, away from the air cylinder, of the piston rod is fixedly connected with a movable plate arranged transversely. A plurality of mounting grooves with openings facing downwards are formed in the side wall of the lower side ofthe movable plate. Steel needles are inserted in the mounting grooves. The movable plate is provided with sliding grooves communicating with the mounting grooves. The inner wall of the side, away from the mounting grooves, of the sliding groove is connected with clamping blocks through springs. The side walls of the steel needles are provided with clamping grooves matched with the clamping blocks. Sliding rods are fixedly connected with the side walls of the clamping blocks. A strip-shaped opening communicating with the sliding groove is formed in the side wall of the lower side of the movable plate. The sliding rods penetrate through the strip-shaped opening. The air hole pricking device is easy, rapid and convenient to dismount and mount and convenient to replace, the working efficiencyis improved, and the application range is wide.