The invention discloses a wide-area operation data unified processing method for an intelligent power grid dispatching control system, and relates to the field of power grid dispatching. At present, apower data center is low in operation data service capability. The method comprises the steps of source data end extraction and sending, collection end subscription and processing and data supplementary calling. According to the technical scheme, a message-oriented middleware technology is utilized to realize wide-area high-speed collection of operating data; the wide-area operation data unifiedprocessing method improves the operation data service capability and provides application support of operation data for various power grid businesses. Scheduling operation data is shared by schedulingmechanisms above the provincial level, the consistency is kept, and refined management and intelligent decision making are achieved. Requirements of different professions and services on operation data are met, and unified maintenance, hierarchical management and a global sharing mechanism of the power grid operation data are realized. The purpose of coordinated control of national division, provincial division and local division in the same scene is achieved, the function of a dispatching center is fully played, and safe and stable operation of a large power grid is ensured.