The invention provides a longitudinally-wrapped nonmetal reinforcing band for an optical cable with a novel structure, which consists of an adhesive, fibers and (or) FRP rods, wherein the adhesive bonds the fibers and (or) the FRP rods into a longitudinally-wrapped band-shaped body; the extension directions of the fibers and (or) the FRP rods are the same as the extension direction of the longitudinally-wrapped band-shaped body; and the cross section of the nonmetal reinforcing band is quadrangle or similar to the quadrangle. In the process of processing the optical cable, the longitudinally-wrapped nonmetal reinforcing band is longitudinally wrapped or lapped outside the beam tube or the cable core in a butt joint mode, and then the sheath is extruded, so that the longitudinally-wrapped nonmetal reinforcing band is tightly attached to the central beam tube in a 360-degree range, and the central beam tube, the longitudinally-wrapped nonmetal reinforcing band and the sheath form an organic whole. In the optical cable, the longitudinally-wrapped nonmetal reinforcing band has the functions of tensile resistance, compression resistance, moisture resistance, optical cable retraction resistance, rat bite resistance and the like.