Abstract: Gymnasium of Ningxia University is Unique in its shape construction technology is complex,the steel truss roof is made of stage and audience area system,and its installation has no continuity.Aiming at construction difficult point of truss structure of steel pipe,some key technologies of steel pipe truss are mainly discussed,including the erection of stage area steel truss temporary support and installation of audience area support of transform truss,high-level assembly,and integral lift of radial main truss so on.Using the scheme of erecting steel platform,under transform truss,the construction is speeded up and the economic benefit is also improved.The lifting scheme is far superior to the full scaffolding installing scheme,which may be a reference for the construction of similar projects.