Printing machine with cleaning function

The printing machine with the cleaning function comprises a base, a printing machine body and a wind-up roller used for controlling base materials to move, the printing machine body is provided with a feeding port and a discharging port, the printing machine body is fixedly arranged on the upper surface of the base, the wind-up roller is located at the end, close to the discharging port, of the base, and the wind-up roller is arranged on the upper surface of the base. A dust cover is fixedly arranged on the base, one end of the dust cover communicates with the printing machine body, the other end of the dust cover is open, and a cleaning mechanism is arranged in the dust cover and comprises a horizontally-arranged cleaning roller and a first motor used for driving the cleaning roller to rotate. And a plurality of scraping plates for cleaning the base material are arranged on the surface of the cleaning roller. The cleaning mechanism is arranged to clean and remove impurities of the label paper, and the printi