The utility model discloses a building site dust fall cooling spray set belongs to construction technical field, solves current building site dust fall spraying system shower head threadiness and goesout water, dust fall, the poor problem of cooling effect, personally experience sth. Part of the body with spraying including the shower, spraying the body including spraying main part, spraying branch pipe and toper shower nozzle, spraying the main part and having shutoff top surface and columniform lateral wall, the bottom that sprays the main part is connected with the shower, spraying branchpipe is three at least, and the even arranges on spraying the lateral wall of main part, and spraying branch pipe's one end is fixed with spraying the main part, and spraying branch pipe's lumen and the appearance liquid inner chamber that sprays the main part communicate with each other, and spraying branch pipe's the other end is connected with the toper shower nozzle, the toper platform form oftoper shower nozzle for having the inner chamber, the big terminal surface and the spraying branch pipe intercommunication of toper shower nozzle have been offered on the small end face and have beensprayed the hole, still are provided with the pressure boost blade in the toper shower nozzle. The utility model discloses simple structure, processing is convenient, manipulate simple, portable, efficient, easy turnover.