The utility model discloses a slitting machine, include the frame and set up the platform of cutting in the frame, its characterized in that: cut to be equipped with on the platform and cut the roller, cut and be equipped with a plural number piece annular on the outer fringe face of roller and cut the sword, the both ends of cutting the roller are equipped with a backup pad respectively, every be equipped with a coupling mechanism in the backup pad, the both ends of cutting the roller respectively with coupling mechanism links to each other, the left side of cutting the roller still is equipped with two screens strips, screens strip perpendicular to cut the roller setting, just cutting of screens strip below still is equipped with the sliding tray on the platform, the sliding tray is on a parallel with cut the roller setting, the screens strip through bolt slidable mounting in in the sliding tray. The utility model discloses in has improved and divide strip efficiency and divide a strip quality, reduced operating personnel's intensity of labour.