The cause of self-vibration of the punch press machine is mainly due to the loss of force during the transmission of force from the punch press machine. As we already know, the working principle of the mechanical punch press machine is to convert the circular motion of the motor into the linear motion of the slider: the flywheel is driven by the motor, the flywheel drives the large gear through the shaft and the pinion, the large gear makes the crankshaft work through the clutch, and the crankshaft drives the connecting rod to make the slider go up and down. There is loss of force in the transmission process, and this part of the force acts on the mechanical punch press machine body causing the vibration of the mechanical punch press machine. To reduce this vibration, it is necessary to pay attention to the maintenance of the mechanical punch press machine, regularly lubricate and clean the mechanical punch press machine.