The invention discloses a cable shell structure, which comprises a first shell, wherein the upper surface and the lower surface of the first shell are connected with pressure-resistant vacuum layers; the pressure-resistant vacuum layers are fixed on the first shell, and one side of the upper surface of each pressure-resistant vacuum layer is connected with a nose; the nose is integrally connected with the pressure-resistant vacuum layers; the side surface of the first shell is connected with a copper sleeve; the copper sleeve is clamped on the first shell; one side, opposite to the first shell, of the copper sleeve is connected with a second shell; waterproof sealant strips are connected between the copper sleeve and the first shell and between the copper sleeve and the second shell; more than one threading pipe is arranged in the second shell; the threading pipes are different in size and run through the copper sleeve; and a protective cover is arranged at one side, opposite to the copper sleeve, of the second shell and is clamped on the second shell. The cable shell structure disclosed by the invention is tightly connected; the compressive protection ability is high; the transport safety of the cable in a few of special sections can be effectively protected; accidents are reduced; and meanwhile, the cable shell structure is easy to implement and convenient to operate and connect.