The cable network installation of the National Astronomical Observatories FAST project includes 2225 main cable nodes, 6670 main cables and 2225 lower cables, all installation work needs to be completed in the air, requiring high precision and difficult construction. In order to avoid excessive stress in the cable network during installation and meet the stress requirements of the ring beam, the entire cable network is divided into 5 construction areas symmetrically and equally during construction, and each area is constructed simultaneously. During construction, a large number of suspended ropeways are required for assembly. Among them, the construction channel is a fixed ropeway, which needs to bear a large force, and the construction ropeway is constantly transferred with the installation progress.