ADSS optical cable is also known as all-media self-supporting optical cable, the full media is used by the optical cable is all media material, self-supporting refers to the optical cable itself strengthening components can withstand the weight and external load. The name points to the use of the cable environment and its key technology: because it is self-supporting, so its mechanical strength is pivotal; The use of all-dielectric materials is because the cable is in high voltage and strong electricity environment, must be able to withstand the impact of strong electricity; Since it is used overhead on the power tower, it is necessary to have supporting pendants to fix the cable to the tower. That is, ADSS optical cable has three key technologies: optical cable mechanical design, determination of suspension point and selection and installation of supporting tools. The mechanical properties of ADSS optical cable are mainly reflected in the Maximum Allowable Tension (MAT), the average annual operating tension (Every Day Strength, EDS and Ultimate Tensile Strength (UTS) etc. The national standards for ordinary optical cables clearly specify the mechanical strength of optical cables used in different ways (such as overhead, pipeline, buried, etc.). The ADSS cable is a self-supporting overhead cable, so it must withstand the long-term effects of its own gravity as well as the natural environment. If the mechanical properties of the ADSS cable are not designed properly and do not adapt to the local weather, the cable will have safety risks and its life will be reduced. Therefore, each ADSS cable engineering must be based on the cable routing in the natural environment and span ADSS erection file distance can reach 1800 meters/stop, high voltage resistance, good corrosion resistance, lightning protection, can be laid on the transmission line tower of 500kV voltage level, and has strong anti-impact performance, The average sand gun fired at a distance of 10 meters will not cause fault damage to the cable. It also has strong low temperature resistance and environmental adaptability. Optical cable does not rely on power lines and independent laying, construction and maintenance are more convenient, and do not need power outage operations, optical cable is relatively cheap.