This vertical rubber cutter is mainly used to cut the natural rubber, synthetic rubber, and other plastics materials, especially it is suitable to be installed near the rubber mixer to cut small piece of rubber. This vertical rubber cutter mainly consists of rubber knife, frame, cylinder, base, auxiliary table, hydraulic system, and electric system. The nylon plate is installed on the base under the cutting knife for protecting the edge of the cutting knife. When cutting the raw rubber, put the raw rubber under the rubber knife, then press the start button, the knife can cut the rubber. Two limit switches are installed on the frame to control the reversal valve to change the movement direction of the rubber knife, at the same time it protects the cover of the cylinder.