Senegalese wrestling arena is the first modern wrestling field in Africa built by Hunan Construction Group with the aid of Chinese government. With a longitudinal span of 206.9 meters, the steel canopy consists of 49 trusses, including the main arch, the rear arch, the secondary trusses and the connecting trusses. The measurement error of the steel canopy has been strictly controlled by adopting the method of free station construction, with the layout of measurement points optimized by Tekla technology as well. This paper introduces the technical points of measurement from the following five aspects: bed-jig assembling, truss assembling and checking, temporary support lofting, truss hoisting and unloading deformation observation, so as to ensure the quality and accuracy of the project.