The invention discloses a submarine cable. Cross top rods are arranged in the submarine cable at equal distance, a cable protection sleeve is arranged at the outer peripheries of the cross top rods, aplurality of power cables are arranged on cross corners of centers of the cross top rods, a plurality of metal strips are arranged on an inner circumference surface of the cable protection sleeve atequal distance, two support points are arranged in a first top rod and a second top rod and are centrically symmetric, each one fourth metal strips are connected with the nearest support point by a metal wire, the support points of the cross top rods at a rear part are connected with end points of the cross top rods at a front part by metal wires, similarly, the support points of the cross top rods at the front part are connected with the end points of the top rods at the rear part via metal wires, and a space between the cable protection sleeve and a power cable is filled with a polyethylenefiller. By the metal wires matched with the polyethylene filler, the pressure resistance of the cable can be greatly improved, and the initial state is recovered by memory performance of metal; and bythe submarine cable, the pressure resistance can be maintained, and the submarine cable has certain flexibility.