When it comes to the responsibility of appearance in the staircase industry, it is necessary to mention the concept of “rotating stairs”. As a hub of spatial connectivity, it is a dynamic and graceful bond that resembles dancing.Not only does it perfectly fit its own functionality, but it also becomes a part or even the focus of the space, giving it a visual beauty beyond imagination. The steel structure rotating staircase, as a spatial structural component, is subjected to the combined effects of spatial bending, shear, torsion, and axial force, and its structural form is extremely complex