Screen cleaning device and medical self-service machine thereof

The utility model discloses a screen cleaning device and a medical self-service machine thereof, the screen cleaning device comprises a base, a first end shell and a second end shell, the base is provided with a through screen groove, the screen groove is sleeved outside a touch screen, and the base is installed on a machine body; the interior of the first end shell is assembled with a first belt shaft in a circumferential rotation mode, the second end shell is assembled with two second belt shafts in a circumferential rotation mode, the first belt shaft is connected with the two second belt shafts through two moving belts to form a belt transmission mechanism, and one second belt shaft is connected with an output shaft of a motor; the two moving belts are further fixedly assembled with the corresponding moving parts respectively, cleaning shafts are installed on the moving parts in a circumferential rotation mode, the cleaning shafts are sleeved with cleaning rollers, and the cleaning rollers are soaked with