Spraying dust falling device for building construction

The utility model discloses a spraying dust falling device for building construction, and relates to the field of buildings. A spraying and dust falling device for building construction comprises a surrounding baffle and further comprises a mounting plate, the mounting plate is arranged on one side of the surrounding baffle, a connecting pipe is mounted in the mounting plate in an embedded mode, and one end of the connecting pipe is rotationally connected with a spraying head through a sealing bearing; one end of the hose is fixedly connected with the water inlet in one end of the connecting pipe; compared with the prior art, the spraying device has the advantages that the rotating assembly and the swing assembly are matched with each other, the spraying head is driven to rotate at a high speed, meanwhile, a power source generated by rotation of the spraying head drives the spraying head to swing left and right in a reciprocating mode, and then the spraying range of the spraying head is further expanded; and