The CNC double knife paper cutter consists of a paper returning roller, a longitudinal cutter, a paper feeding roller, a cylinder transverse cutter, a high-speed conveyor belt and a low-speed conveyor belt. First, the base paper is rolled out from the paper on the paper returning roller, and then the wide paper is cut into two or several narrow papers that meet the requirements through a longitudinal cutter, and then transmitted forward through the first paper feeding roller, one of which is directly sent to the first cutter, The other paper belt continues to be sent to the second cutter through the second feeding roller, and then the paper is cut horizontally into the required paper, and finally sent to the paper receiving platform for packaging through the conveyor belt. The position of the longitudinal cutter can be changed to adjust the width of the paper tape, and it does not need speed control. The speed of the feed roller is adjusted according to the design requirements, and the speed of the transverse cutter is determined by the length of the cut paper and the speed of the feed paper. The transverse cutter rotates once a week to cut the paper. When changing the cutting length or feeding speed, or both, the cutter speed must be changed at the same time. Therefore, the paper cutting accuracy is determined by the synchronous control of the cutter speed relative to the paper feeding speed.