The utility model provides an electric power system intelligence station optic fibre interface converting device, includes optic fibre switch and fiber optic conversion ware, and the female head of ST, the female head of LC are connected respectively to the one end of optic fibre switch, and fiber optic conversion ware, ST head, LC head, SC head and FC head are connected respectively to the other end of optic fibre switch, and the fiber optic conversion ware is connected the net twine and is connected. The utility model discloses the problem that has multiple interface with the tester when equipment such as intelligent substation are connected and plague for maintenance work has effectively been solved, adopt the optic fibre switch to connect, the loss is little, satisfies data and grabs a packet requirement, and be favorable to the fiber optic conversion ware to realize photoelectric conversion, data interchange supports to carry on between two female heads and four the sub-heads, can directly be connected with the notebook, again can with hand-held type numerical analysis appearance cooperation, to the optical fiber interface of polymorphic type grab packet, data acquisition, convenient and fast, practicality are strong, have improved work efficiency greatly.