The adhesive mixture for reinforcing polystyrene foam plates is used at the time of reinforcing insulation plates of foam and polystyrene foam with a special facade mesh. A dry adhesive mixture is diluted with water and mixed with a construction mixer until the estimate mass of medium density is obtained. The finished mixture is applied to the insulated area of the wall with a spatula, after which a facade mesh is applied over it and pressed with the same spatula.