Triplex one-point fibre box is used for wiring connection of optical cables and optical communication equipments, through the adapter in the wiring box, optical signals are led out with optical fibre patch cords to achieve the function of optical wiring. It is suitable for FTTH project to use after the cable to the building, installed in the corridor, basement, equipment room and building facade. Fiber optic cable can also be opened and coiled by the splitter distribution box and the household cable fusion lead, to achieve the straight-through function of the optical cable, to meet the needs of the traditional transmission network engineering. Effectively do mobile, Unicom, telecom three networks. Greatly save the construction space and construction intensity.