With the increasing depth of ocean exploration, the volume and weight of underwater towing equipment and the increasing data capacity, the design requirements of towing cable are higher and higher. According to the requirements of the current market, we customize a series of underwater photoelectric towing cables for customers, which can be used to drag complex underwater towing bodies and arrays, safe working loads and breaking forces as well as the outer diameter of the cables can be selected according to different needs, and the designed optical towing cables have good towing characteristics.