Dust falling device based on door and window purification technology

The utility model relates to the technical field of door and window dust removal, in particular to a dust falling device based on a door and window purification technology, which comprises a door and window frame, a glass body is fixedly connected in the door and window frame, a water removal mechanism is arranged on the surface of the door and window frame, a bottom plate is arranged at the bottom of the door and window frame, and universal wheels are movably connected to the bottom of the bottom plate. A dedusting mechanism is arranged at the top of the bottom plate; the water removal mechanism comprises a first sliding plate and a second sliding plate, the first sliding plate is arranged on the inner side of the glass body, the second sliding plate is arranged on the outer side of the glass body, a first magnet is fixedly connected into the first sliding plate, and a pull ring is fixedly connected to the outer surface of the first sliding plate; by arranging the water removal mechanism, water drops attache