This invention refers to a detachable carbon-fiber conductive rail in the technical field of conductive rail. The conductive rail above has a main body that consists of a long connecting pipe module linked with an elastic sheet module at one end, and at the other end of the elastic sheet module far away from the long connecting pipe module, there is a short connecting pipe module. In this invention, the long connecting pipe module, the elastic sheet module and the short connecting pipe module are connected in sequence. In this way, operators can dismount and install the modules easily to improve efficiency of installation and bring down the costs. As for this detachable carbon-fiber conductive rail, multiple long connecting pipe modules, elastic sheet modules and short connecting pipe modules can be connected together in sequence to shape several conductive rails. The installation circuits can be curved, straight or annular. Both the long and short connecting pipes are made of carbon-fiber composites which are characterized by strong resistance to thermal shock, corrosion and radiance.