This study investigates a method for generating main wiring graphs and sub-graphs for substations, based on stylistic guidelines. Based on the graphical standard of the substation, three layers style according to the high to low such as layout, container and graphics are proposed. The container style is the key elements of graphics generation which is a collection of the same element. The Container style can layout elements within the container automatically in different scenarios. On this basis, put forward a kind of automatic generation of main wiring graph and sub-graph method in the substation based on style. Developed a set of substation graphics aided generation system through the instantiation and layout of the style, effectively improved the work efficiency.