In　this　study,　cyclic　tension　tests　were　conducted　on　ordinary　Galfan　cables　and　locked　coil　Galfan　cables　with　diameters　of　40　mm　to　evaluate　their　mechanical　properties　under　cyclic　tension.　The　mechanical　behavior　of　the　two　kinds　of　Galfan　cables　under　monotonic　loading　and　cyclic　tension　was　analyzed,　while　the　differences　in　strength　and　the　mechanical　properties　of　the　two　kinds　of　Galfan　cables　and　the　effects　of　different　loading　systems　on　the　mechanical　properties　of　the　two　kinds　of　cables　were　obtained.　The　Ramberg-Osgood　model　was　used　to　fit　the　skeleton　curve.　The　elastic　and　inelastic　behaviors　during　loading　and　unloading　were　studied.　The　change　in　elastic　modulus　of　the　Galfan　cable　with　respect　to　cyclic　load　is　proposed,　and　the　exponential　model　of　strain　and　elastic　modulus　under　cyclic　load　is　established,　which　lays　a　foundation　for　the　accurate　finite　element　analysis　of　cable　structure　response　under　strong　earthquake　and　other　accidental　loads.