Building construction material surface spraying device

The utility model provides a building construction material surface spraying device which comprises a top plate, four sliding rods are fixed to the bottom of the top plate, a plurality of positioning holes are formed in the outer walls of the four sliding rods, the bottoms of the four sliding rods are sleeved with sliding sleeves, universal wheels are installed at the bottoms of the four sliding sleeves, and the universal wheels are fixed to the bottom of the top plate. And positioning mechanisms are mounted on the outer parts of the four sliding sleeves. According to the building construction material surface spraying device provided by the utility model, the device is provided with a positioning mechanism, a turning plate turns over to control a positioning pin through a connecting groove so as to compress a spring, and then a user slides a sliding rod on a sliding sleeve so as to stably position a positioning hole; according to the design, the height of the top plate can be adjusted in a linkage mode, the