When the crane can’t work for the altitude of the high buildings, we can consider about the jacking system. Jacking system include some steel truss, a steel platform, some steel columns and so on. The steel platform is nearly the area with the concrete core tube, it provides a place for workers to wrap the rebar, to pure the concrete. This article combine the real engineering, detailing introduce when the jacking system meet a big wind load, how does it morph, and compare the margin with the code in China.