The invention relates to an indoor decoration wall tile laying device. The indoor decoration wall tile laying device includes a moving device, two side plates, a feeding device, laying device bodies and plastering devices. The side plates are front and back symmetrically installed on the middle part of the upper end of the moving device, the feeding device is installed at the upper ends of the side plates by welding, the laying device bodies are laid below the feeding device, and the laying device bodies are installed in the side plates, and the plastering devices are arranged at the left endsof the laying device bodies. According to the indoor decoration wall tile laying device, the problems that the laying process is cumbersome and the manual installation accuracy is low due to the factthat when laying is carried out manually, the rough surface of a wall tile is plastered with cement manually, and then the wall tile is positioned and laid manually; and the laying efficiency of thewall tile is reduced due to the fact that when laying is carried out by an existing indoor wall tile laying device, the wall tile is manually placed on the wall tile laying device for locking and fixing, and then the rough surface of the wall tile is plastered with cement, the plastering of the cement is uneven during laying, wall tile laying produces hollowing, and the process of manual placing of the wall tile is cumbersome can be solved.