The invention discloses a power grid disaster monitoring and rush repairing system and method based on a geographic information system (GIS). The system and method includes a data collection unit, a control unit, an information transfer unit and a centralized control center. The data collection unit comprises an unmanned aerial vehicle monitoring module and a robot monitoring module. The centralized control center comprises an industrial personal computer and a display. An information alarm module, a database module and a GIS module are arranged in the industrial personal computer, and the database module is connected with the GIS module. The system and method monitors the operation state and the environment of the power grid by means of unmanned aerial vehicle monitoring and high voltage line patrol robot monitoring, and the monitoring information is imported into the GIS to achieve visualization and real-time monitoring of the power grid. In case of the power grid accident, historical accident information can be timely found and imported to provide reference for solving the problem, the rush repair of the power grid accident is quickened, and the loss caused by the power grid accident is reduced.