For all kinds of public rest places such as cafes, and tea restaurants, the design of interactive chairs focuses on using chair back lines to create four different emotions, anger, sadness, normalcy, and happiness. It goes layer by layer.The emotion is expressed through the frame of the back by using same profile shape, so that users can accurately locate their feelings and avoid unnecessary social awkwardness.Therefore, it can promote the emotional communication among people, rather than merely remain a cold and indifferent person in the colorful information age.