The present invention relates to a metallic cable, which comprises a cable core and a metal cladding around the cable core, wherein, the metal cladding is in an arc interlock buckled armor structure. Metallic cables in such a structure have greatly improved flexural property and can be laid smoothly; in addition, one or more cable cores can be combined into a cable as required for power transmission, control system, signal transmission, or illumination circuit, etc., and metal cladding can be added around the cable in an arc interlock buckled form to serve as a protective sheath and an earthing system for the cable to increase safety margin and protect the cable cores well; in addition, the coverage density of the metal cladding can be up to 100 percent, and therefore the shielding effect is more outstanding. The metal cable in the present invention is simple and practical in structure, and can be widely used especially in the building industry.