Tianjin Guotai Bridge is an arch bridge with two parallel steel trusses arch rib structure, and its main beams are welded box end face structure. Limited by the bridge type, the tension end is set at the end of the beam with less tension space. The optical fiber grating embedded in the suspender cable body is used to detect the health of the cable body. The fiber grating embedded in the cable increases the difficulty of installing the boom. This paper briefly introduces the construction and installation process of the boom of Tianjin Guotai Bridge, and provides some references for the construction of the boom of arch bridge in the future.