The guillotine machine is a wood processing machine. Including the feeding roller and the discharging roller which are respectively located at the two ends of the worktable and driven by the power device. The special frequency converter suitable for the guillotine machine, including AC rectifier circuit, DC frequency conversion circuit and high-speed processor, is characterized by smooth speed regulation, small starting current, stable operation, high efficiency and strong practicability. It is worthy of popularization and use.