The embodiments of the invention provide a method and a system for automatically generating a secondary safety measure for a smart substation. The method comprises the following steps: querying a corresponding secondary safety measure template in a preset secondary safety measure template library according to the maintenance scope input by a user; analyzing data information in a substation configuration description SCD file, extracting object information related to the secondary safety measure template, and building an object model; and matching the object model with the secondary safety measure template according to preset matching rules to generate a secondary safety measure. According to the method and the system provided by the embodiments of the invention, a secondary safety measure template is selected according to the maintenance scope, data information in an SCD file is extracted according to the secondary safety measure template, an object model is built, and the object model and the secondary safety measure template are matched. Therefore, automatic generation of a secondary safety measure for a smart substation is realized, and the writing efficiency of secondary safety measures is improved.