Marine cable tube

The invention discloses a marine cable pipe, which comprises a first pipe fitting, a second pipe fitting, a first connecting piece, a second connecting piece, a second pipe fitting, a third connecting piece, a fourth connecting piece and a fifth connecting piece, and is characterized in that one end of the first pipe fitting is connected with a deck while the other end is connected with the first connecting piece; one end, close to the first pipe fitting, of the second pipe fitting is connected with the second connecting piece; the first connecting piece and the second connecting piece are detachably connected. When equipment and the like on the deck are not installed in place, the equipment and the like are welded and installed in advance, and only the first pipe fitting needs to be installed during installation. At the moment, as no longer protruding second pipe fitting exists, hoisting of subsequent equipment and the like is not affected, and when the equipment and the like need to be disassembled, assembl