Environment-friendly sea-worm-proof double-steel-wire armored optical fiber composite submarine cable

The invention discloses an environment-friendly sea-worm-proof double-steel-wire armored optical fiber composite submarine cable which is a compound high-voltage alternating current submarine cable with the submarine cable and submarine optical cable functions and accordingly the power transmission and the optical signal transmission are implemented. The environment-friendly sea-worm-proof double-steel-wire armored optical fiber composite submarine cable can be used in the damp environment, the lead and other heavy metal are not contained, and the environment-friendly effect is achieved; a split-phase protection layer, an inner protection layer and an outer protection layer are formed by extrusion type protection sleeves; a sea-worm-proof copper belt is formed by brass and other alloy materials which are excellent in mechanical property and good in corrosion resistance; an armored structure is a double-layer steel wire armored structure and an armored cushion layer is added between armored layers.