The invention relates to a power grid fault countermeasure plan combining compilation method and device. The method comprises the following steps: corresponding countermeasure plan execution steps uploaded by the National Electric Power Dispatching and Communication Center and/or all provincial electric power dispatching and communication centers are received via a three area dispatching and management system, and the received corresponding countermeasure plan execution steps are gathered; files of preset file types generated by the three area dispatching and management system according to the gathered countermeasure plan execution steps are received; the files of the preset file types are parsed, and complete files of the preset file types are generated according to file information obtained via parsing operation and currently monitored extra high voltage direct current fault monitoring information; the complete files are sent to fault coprocessing systems of all the provincial electric power dispatching and communication centers, and therefore the received complete files can be parsed and displayed via the fault coprocessing systems of all the provincial electric power dispatching and communication centers. Via the power grid fault countermeasure plan combining compilation method and device, the National Electric Power Dispatching and Communication Center, branch centers and the provincial electric power dispatching and communication centers can coordinate with each other to revise a combined fault countermeasure plan for extra high voltage direct current faults according to dispatching and management relations, and that a newly revised/confirmed countermeasure plan is the only valid plan can be ensured.