Fatigue-resistant high-water-resistance submarine cable

The invention discloses a fatigue-resistant high-water-resistance submarine cable which comprises copper conductors, a shielding structure, a polyethylene inner protective layer, an armored layer andPP ropes. The shielding structure is composed of a conductor shielding layer, an XLPE insulating layer and an insulation shielding layer, a radial water-blocking layer is arranged between the shielding structure and the polyethylene inner sheath and is composed of an annular corrugated metal sheath and a water-blocking material. According to the fatigue-resistant high-water-resistance submarine cable disclosed by the invention, the annular corrugated metal sheath of the submarine dynamic cable is made of a copper alloy material, so that the submarine cable has a relatively larger corrugated depth and a relatively smaller corrugated pitch, the fatigue resistance and the water pressure resistance of the submarine cable can be remarkably improved, and the longitudinal water resistance can also be improved to a certai