In normal work, to prevent anything from entering under the cutter, whether it is any object blocking the photoelectric screen, the brake will be emergency to ensure that the knife will not fall. Two-button operation principle. This requires that both buttons are pressed at the same time, otherwise the cutter motor will not operate, which can guarantee the absolute safety of single-person operation. There is also a safety latch device, which is to prevent the paper press from falling off and causing injury to the operator. However, it is not possible to ensure the safety of the paper cutting machine by making these protection devices 100%, and the operators need to be treated with caution and carefully operated.