The invention discloses a visual analysis and automatic generation method for an SCD (Substation Configuration Description) file based on a network topology. The SCD file is analyzed based on IEC61850 standards, and a connection model for secondary devices of an intelligent substation is automatically generated via the network topology. A secondary circuit diagram and a logical connection diagram of the devices are automatically generated according to the SCD file, and bear link information of an application, so that the function and importance of each member of a data set become intuitive and are easy to understand, a visual SCD analysis means is provided for substation running maintenance personnel, the time for analyzing the SCD by the running maintenance personnel is shortened, and the working efficiency is improved.