Wallpaper can be pasted on the board, as long as its plane is neat, OK! If it is uneven, just make up a little with sewing materials. The method is as follows: 1. Brush the special basement membrane or alcohol varnish for wallpaper on the wooden board, and then carry out the next construction after thorough drying. 2. Soak the wallpaper thoroughly with clear water, brush the wallpaper glue on the back, stick it on the board and scrape it with a scraper, scrape off the excess glue and wipe it with a clean towel to survive. If the board is flat, there is no need to add gypsum board. There is no problem in pasting wallpaper on the board. You can paste it with or without it. This board had better be planed, or at least polished. The key to the problem is where the board is used, and the place that is prone to problems is the connection with the surrounding area. After all, the substrate is different. If the board is used, the periphery will be somewhat open after a long time, so it is necessary to leave an edge on the back of the board. It's no problem to stick wallpaper on the board. You can paste it with or without it. This board had better be planed, or at least polished. The key to the problem is where the board is used, and the place that is prone to problems is the connection with the surrounding area. After all, the substrate is different.