Abstract: Currently in most of the physical circuit connection in smart substations, secondary system takes several back map of secordary equipment, then complating the jump fiber of internal cubicle and the fiber corn betwween two cubicles by correspond to optical port of both devices.For similar backplane structure of similar equipments inside the substation, the huge port data set, the current physical circuit connections in use can easily cause the confusion of physical circuit design for similar devices, connection to the wrong cores multiple designed rework and wrong rectification.In this paper, smart substation physical circuit design in accordance with the typical bay classification form a typical design program, typical design data as a template derived from the completion of a similar bay physical circuit connecting.This design method is applicated in multiple intelligent substations, shortening the design cycle and improving the design efficiency.