The invention discloses a plastic bag quick punch. The plastic bag quick punch structurally comprises a line connector, a connecting line, a distribution box, a supporting base, a base, a machine tool, a punching control device and a shell. The shell is arranged above the base. The supporting base is arranged on one side of the base. The supporting base and the base are mechanically welded to be of an integrated structure. The shell and the base are mechanically connected through the supporting base. The line connector is arranged on the side face of the shell. The line connector penetrates through the panel on the side face of the shell. According to the plastic bag quick punch, it is realized that plastic is completely penetrated to be punched by the punching apparatus through the working action of the driving device, a lifting device, a quick punching device and a transmission device, the punching speed is increased, and the working efficiency is improved while the quality is guaranteed.