Flexible support has a very wide range of application scenarios, similar to sewage treatment plants, agricultural light complementary, fishing light complementary, mountain photovoltaic, and parking lot photovoltaic, etc., can be widely applied. In terms of structure, flexible support can be roughly divided into single-layer suspension cable system, prestressed double-layer cable system (load-bearing cable + stability cable), prestressed cable network, mixed system, tensioning (beam, truss) + cable arch, string support dome, transverse stiffening + and other structures. The structure type of flexible support for large-span prestressed suspension cable includes the key parts such as load bearing, component cable, cable truss interstrut, pile, side anchor system, steel beam and cable truss strut.