Inspired by the shape of the spine, it creates a unique staircase. This creative idea arises based on the shape and structure of the spine in humans. The ladder attaches to a shaft that is shaped like a human spine. There are several designs of spine indoor staircase, for example made from wood, iron, glass, or stainless steel. With a neat arrangement, uniqueness and beauty are attached to each part. In general design, indoor staircase is propped up by two axes. However, with reference to the design of the human spine, with only a single shaft supported, it has a high strength. The axis to attach the stairs is right in the middle, so in addition there is strong artistic value and high creativity. See some examples of the design we present here.