The structure of GYTC8S (metal reinforced suspension wire, loose sheath layer twisted filling type, steel polyethylene bonded sheath 8-shape self-supporting outdoor optical cable for communication) optical cable is to sleeve single-mode or multi-mode optical fiber into the inner filled waterproof compound loose tube made of high modulus plastic. The center of the cable core is a metal reinforced core. For some cable cores, the metal reinforced core is also extruded with a layer of polyethylene (PE). The loose tube (and the filling rope) is twisted around the central reinforced core to form a compact and circular cable core, and the gap in the cable core is filled with water blocking compound. After the plastic coated steel strip is longitudinally wrapped, the steel strand and sling polyethylene sheath are added at the same time.