The utility model relates to an opener technical field specifically is a novel cotton slitting machine, including driving cotton equipment, conveyer, maintenance box and ash bucket, open cotton equipment front end fixedly connected with fixed plate, just it has the second fixed plate to open the inseparable welding in cotton equipment rear end, open the left side embedding of cotton equipment topmiddle part and be provided with the dust guard, just fixed plate front end corner sets has four fixed screws, fixed plate front end middle part top is provided with the louvre, this kind of novel cotton slitting machine since novel cotton slitting machine be applicable to usually clothes factory or toy factory break up the cotton used, so, as user during at the use opener, the louvre vertical arranged be in on the fixed plate, just the louvre is provided with threely, can run from opposite directions cotton equipment simultaneously through the louvre that is equipped with and dispel the heat,the inside high temperature of the equipment that prevents and cause the trouble.