Building waterproof construction coating mixing device

The utility model relates to the technical field of buildings, in particular to a building waterproof construction coating mixing device which comprises a shell, a telescopic rod and a first scraping plate connected in a hinged mode, a first movable groove is formed in the surface of the shell in a surrounding mode, the telescopic rod is arranged in the first movable groove in a sliding mode, and a movable plate is movably arranged on the surface of an end opening of the telescopic rod. A first scraping plate is mounted on the surface of one side of the moving plate, during use, the telescopic rod is moved upwards, the direction of the moving plate is adjusted, and the first scraping plate is attached to the inner wall of the shell; and by arranging the inner wall scraping device, residual coating on the inner wall can be better prevented from being adhered to the inner wall of the stirring device, and meanwhile, the influence on the coating mixing quality is avoided when other materials with different colors