Earthwork dust falling device for building construction site

The utility model relates to the technical field of dust falling equipment, and discloses an earthwork dust falling device for a building construction site, which comprises a water storage main body box, a control display is fixedly connected to the middle of one side of the water storage main body box close to the front side, and moving wheels are fixedly connected to the bottom of the water storage main body box close to four corners. A fixing column is fixedly connected to the middle of the top of the water storage main body box, a fixing ring is connected to the side face, away from the center, of the fixing column through a bearing, and a rotating gear is fixedly connected to the side face, away from the center, of the fixing ring. And when the side with the high PM10 concentration is detected, the overall orientation position of the mist outlet cylinder is adjusted by controlling the induction motor, the side with the high dust concentration can be preferentially treated, the dust falling purpose can be