Wall plastering device for building decoration engineering

The utility model discloses a wall plastering device for building decoration engineering, which comprises a holding component and a dismounting component, and the holding component is arranged above the dismounting component; the holding assembly comprises a holding frame, grooves are formed in the two ends of the holding frame, overturning rods are hinged to the interiors of the grooves through first pin shafts, clamping frames are fixedly connected to the bottoms of the overturning rods, and clamping grooves are formed in the adjacent sides of the two clamping frames; the plastering device has the advantages that the holding assembly and the dismounting and mounting assembly are combined into the whole plastering device, the plastering plate in the dismounting and mounting assembly can be conveniently dismounted from the holding assembly, the plastering plate can be conveniently dismounted from the holding assembly, the plastering plate can be conveniently dismounted from the holding assembly, and the plast