A refractory cable includes an outer cable cover layer which includes a first housing and a second housing, the first housing and the second housing form a circular cable outer covering structure, a mounting cavity is arranged inside the outer cable cover layer, a cable core is arranged inside the mounting cavity, two sides of the outer wall of the cable core are each wrapped with an air bag cushion of an arch structure, and an air storage cavity storing air is arranged in the middle of each air bag cushion, and an arc-shaped convex end of each air bag cushion is in contact with the inner wallof the outer cable cover layer. The refractory cable of the invention has a simple structure; at a certain degree of heat, the first housing and the second housing can be open by inflating the air bag cushions, so that the cable core is exposed and communicates with the external air flow, thereby achieving the purpose of rapid heat dissipation; at the same time, once the air bag cushions are opened, a fire extinguishing agent can enter outer cable cover layer of the cable, and the fire can be extinguished at the first time if there is a fire source, and the use is more safe.