What should I do if the indoor wall skin falls off? Is there any good decoration method? Can I put up wallpaper?

The peeling of indoor walls may be caused by some problems such as long-term humidity at home or aging walls. Generally speaking, we can first find out the reasons for the wall falling, then clean the wall according to the reasons, and then improve it by painting or pasting some wallpaper. If the peeling of the wall is serious and the area is large, then if the economic conditions at home allow, you can polish and scrape the whole wall, then glue it, grind putty, and finally brush latex paint to dry. Only in this way can the decoration procedure be perfect.