Alkali-free interior wall putty powder

The invention discloses an alkali-free interior wall putty powder, and relates to the interior wall putty powder of a wall decorative material. The alkali-free interior wall putty powder is prepared from calcium carbonate powder, polyvinyl alcohol powder, carboxymethyl cellulose, soluble starch and ultramarine blue. The alkali-free interior wall putty powder has the characteristics of simple preparation technology, low transportation cost, low cost of raw materials and high bonding strength, has no any volatile and pungent odor and the like. A yellowing phenomenon is difficult to appear by painting the putty powder on a wall surface for too long time; and the yellowing and floating phenomena are difficult to appear by constructing on an old wall surface. Other emulsion paints or wallpapers are added in the putty powder again, and the floating condition of emulsion paints or wallpapers is unlikely to be caused, so that the putty powder belongs to green and environment-friendly wall decoration. The putty powder can be widely used for the wall decoration of new and old interior walls, and particularly suitable for interior wall decoration of places such as an upscale guild hall, a hotel, a restaurant, a conference center and a family.