The invention discloses an automatic cleaning billboard, which belongs to the field of billboards and comprises a billboard surface, the billboard face is connected to a billboard substrate, and a slide bar is fixedly connected to the billboard substrate. A support rod is slidably connected to the slide rod, and a dust cleaning brush is fixedly connected to the bottom side of the support rod, and the dust cleaning brush is offset against the surface of the billboard. The invention is an automatic cleaning billboard. When there is a lot of dust on the billboard, the winding wheel is driven by the drive motor, and the winding wheel winds the traction wire to pull the support rod. The cleaning brush on the bottom side of the support rod cleans the dust. Under the action, the first rotating shaft is driven to rotate, so that the first rotating shaft drives the second rotating shaft to rotate through the bevel gear, so that the second rotating shaft drives the blowing fan to rotate, and the blowing fan blows away the dust while the cleaning brush cleans the dust, effectively removing the advertising on the billboard The dust on the surface of the billboards, the billboards are beautiful, easy to attract eyeballs, and the city has a good appearance.