The invention relates to a full-dry nonmetal self-supporting skeleton-type optical cable, and the optical cable comprises an external sheath and a skeleton. The periphery of the skeleton is provided with longitudinal fiber slots at intervals, and the interior of each longitudinal fiber slot is provided with an optical communication unit. The optical fiber is characterized in that the center of the skeleton is provided with a nonmetal central reinforcing part in a passing-through manner; the periphery of the skeleton is sequentially wrapped by a waterproof part and a nonmetal reinforcing part; and the outermost layer is wrapped by the external sheath. The beneficial effects of the invention are that 1, the optical cable employs a skeleton-type optical cable structure, and the interior and exterior of the skeleton are provided with the nonmetal reinforcing parts, thereby enabling the optical cable to be high in strength, good in tensile property, and large in span; 2, the fiber filling density is high, and the relative diameter of the optical fiber is small; 3, the optical cable is easy for the setting of a separating window, and optical fibers can be separated and extracted from the separating window; the construction and connection are convenient, and a full-dry structure is more convenient for construction, connection and maintenance; 4, an all-dielectric structure can be used in a power transmission line, is resistant to lightning stroke, cannot be affected by electromagnetic interference, can be laid in a live-line manner, facilitates the separating and winding of the optical fibers, is high in laying success rate, and is low in cable consumption.