The invention discloses a slitting machine for lithium battery machining use. The slitting machine comprises a workbench and a raw material box; one side of the workbench is fixedly connected with theraw material box, a material roller is fixedly installed in the raw material box, and one side of the material roller is fixedly provided with three material tightening rollers; a dustproof cover ishinged to the top of the raw material box, and the side, close to the workbench, of the dustproof cover is provided with a discharging outlet; and the top of the workbench is fixedly connected with aguide plate, and the two sides of the guide plate are both fixedly provided with first bearing seats and second bearing seats. According to the slitting machine for lithium battery machining use, a lithium battery electrode slice raw material is stored in the raw material box, a dust preventing and protecting effect is achieved, two slitting wheels cooperate to conduct slitting machining on the lithium battery electrode slice raw material, the situation that material dislocation and deformation occur during machining, and thus, a machined product cannot be used is prevented through limiting fixing wheels, the rejection rate is decreased, machining equipment does not need to be operated by manpower and is convenient and safe to use, and the machining efficiency is high.