Cable convenient for heat dissipation

The utility model discloses a cable convenient for heat dissipation. The cable comprises a cable core, a hollow heat conduction cylinder, an insulating layer, a heat dissipation ring and an armor layer. The cable core and the hollow heat conduction cylinder are in line contact, and the outer sides of the cable core and the hollow heat conduction cylinder are integrally coated with an insulating layer; an internal fire-resistant layer is arranged in the insulating layer and is filled in gaps between the cable core and the insulating layer and between the hollow heat-conducting cylinder and the insulating layer; the outer side of the insulating layer is sequentially coated with a heat dissipation ring and an armor layer; the heat dissipation ring comprises a heat dissipation inner ring and a heat dissipation outer ring, a heat dissipation cavity is formed between the heat dissipation inner ring and the heat dissipation outer ring, and the heat dissipation inner ring and the heat dissipation outer ring are conne