Three-armoured loading detection optical cable

Provided in the utility model is a three-armoured loading detection optical cable comprising an armor layer, a protective layer, a steel tube layer, and a fiber layer. The armor layer consists of an outer armor layer, an intermediate armor layer, and an inner armor layer; the protective layer is arranged at the inner side of the armor layer; the steel tube layer is arranged at the inner side of the protective layer; and the fiber layer is arranged at the inner side of the steel tube layer. The fiber layer is formed by one or more optical fibers and has the advantage of being capable of bearing the large pulling force, thereby meeting the equipment of high-speed and fast lifting and descending during oil well perforation working; and even if being impacted by the high impact wave instantaneously, the cable can be protected from being damaged easily, so that the oil well logging can be completed as planned and as required. The accident and the optical fiber breaking event during oil well logging can be prevented, thereby saving the oil well logging time and cost.