The utility model discloses a novel carbon fiber composite cable body, which solves the problem that the existing composite core lead cable has poor anti-aging performance and can not meet the practical demands. The composite cable body has the advantages of simple structure, convenient use, good anti-aging performance, excellent suitability for high temperature, and the like. The structure is: the composite cable body comprises a homogenous forming body sandwich layer of carbon fiber and phenolic resin, and the outer layer of the sandwich layer is a winding body of assorted fiber reinforced phenolic resin matrix composite materials.