The spatial elements of line, plan and volume can be integrated by the composition of light and shade, and changed as the spatial coding symbols. This is a kind of elementary spatial design script that can be verified by designer's personal concepts and insights in order to construct the impressive living field for the users. The establishment of designing profession is not only for the solutions of environmental and living issues, but the most important one is to express the spatial qualities and confidence for the users. The balance between the design intension and the owner's life essence must have been suffered a period of harsh time to meditate, in order to figure out the best solution for this design project.