The invention discloses a submarine cable. The submarine cable comprises a core, a shielding layer and a sheathing layer which are sequentially arranged from inside to outside, and a carbon fiber cloth layer is wound around the outside of the shielding layer. The sheathing layer is prepared from the following raw materials in parts by weight: 35 parts of fluorosilicon resin, 18 parts of polyether,18 parts of thermoplastic polyurethane, 8 parts of thermoplastic styrene-butadiene rubber, 6 parts of epoxy resin and 5 parts of expanded perlite powder. The submarine cable has strong waterproof performance, good corrosion resistance and high extrusion resistance.