Dust falling device

The utility model relates to the technical field of dust falling devices, and discloses a dust falling device which is characterized in that one side of a box body is rotatably connected with a rotating door, pulleys are fixedly mounted at the bottom of the box body, and a fourth rotating column is rotatably connected to one end, far away from a floor sweeping device, in the box body; a pushing device is fixedly installed at the top of the fourth rotating column, a supporting block is fixedly installed at the top of the box body, a spraying device is fixedly installed at the top of the supporting block, water in a water tank is sprayed out through a fog gun in the spraying device, dust in the air is reduced, and the dust falls to the ground; according to the dust collection device, dust on the ground can be swept through the floor sweeping device in the box body, the dust is swept through the dust collection device beside the floor sweeping device, the dust is collected and stored in the garbage can, in this