Our adss optical cable is used for overhead power lines,and together with the high voltage power line in the same road,, mainly used for high voltage overhead line communication route. In addition, the cable is in high voltage and strong current environment, must be able to withstand the effect of strong current. So , ADSS optical cable has three key technologies: optical cable mechanical design, determination of suspension point and supporting tools selection and installation. In addition, the cable has overhead, pipeline, direct buried and other different ways of use, so the use of different optical cables should have different mechanical mild. ADSS overhead cable, in addition to the long-term effects of its own gravity, also needs to be adapted to local weather.