In the initial phase of design, the designer hopes to break through the traditional residential design which is dominated by vertical lines. The designer believes it should be more other ways of representation in residence design to create more three-dimensional space inside a square house. Thus I apply the concept of fold surface as the main design approach to the overall interior space. With fold surface design, the space looks more three-dimensional. In the application of materials, Serpenggiante and oak together with LED lights create strong sense of layers. In the selection of furniture, multi fold surface furniture is applied to match the overall design. All these make the whole space more integrated and solid.