The design is a multifunctional single person sofa design, positioned in the rental of young people living alone. This multifunctional single person sofa is divided into three states: 1. The usual state is a single person sofa, which consists of a solid wood frame and four sponge pads; 2. When there are visiting guests, the solid wood frame can be turned over and converted into the dimension of the desk by using the table when the number of things increases. The sponge pad can be hung on the wall without using it, which is convenient for storage. 3. When guests need to rest, the sponge pad can be spliced into a simple bed for temporary rest. A single person sofa integrates chairs, tables and simple beds (rest mats), which greatly saves housing space and is very practical.