In order to generate the SSD file in configuration process of intelligent substation and enhance the graphical representation capability of configuration tool, this paper designs a method of generating SSD file based on SVG. According to the characteristics that the SVG and SCL are based on XML language, this paper edits the internal document type definition (DTD) file, declares SCL elements and attributes in the SVG file, then designs equipment element which contains SCL information. By this way, we can add the configuration information which conforms to SCL syntax when drawing the primary connection diagram of substation, and export the primary connection diagram of substation to SVG file. By using the primary connection diagram which has been configured the SCL information, we can generate the SSD file. This method can enhance the capability of graphics editing of configuration tool, reduce the requirement of engineers’ professional knowledge of IEC 61850, and simplify the process of creation of SSD file.