The invention discloses a substation access method and system, and relates to the technical field of substation configuration. The method includes the steps of writing job content accessed by a substation and operation steps involved in the job content into a guide card; associating the job content with the operation steps by using a pre-stored power grid dispatching tool; receiving an access instruction, and retrieving the associated job content and the associated operational steps according to the access instruction; and completing the access of the substation based on the retrieved associated job content and associated operational steps. With the scheme, the tool can be dispatched according to the operation steps while the access is performed during the access of the substation and also the detailed operation steps are checked to enable precise control, simplification of operation steps, error-free operation, time-saving and labor-saving, and improved working efficiency and quality of technical staff.