1. Building wooden beams or wooden keels on the roof can visually hide the irregular structure of the roof while maintaining the height of the ceiling. 2. Putting the photo frame or picture in a balanced position under the broken line at the top of the slope will also help people to visually ignore the irregularity of the roof. 3. Because the space on the sloping roof is generally narrow, choosing light-colored paint to paint the wall or light-colored wallpaper can keep the indoor space spacious and bright. 4. Clever use of masking method to hide the roof, while keeping the home's vision open. 5. Bookcases can be set between the inclined plane of the sloping roof and the floor for filling, and the upper, lower and middle spaces can be used to reduce the inconvenience caused by irregular roof design. The design of bookcases can be divided into different sizes, which is more in line with the needs of life. The big one can put books, and the small one can put CDs.