The invention discloses a wide area damping control real-time data processing method, and belongs to the field of the power system stability control technology. The method includes the steps that preprocessing is carried out according to data uploaded by a PMU and an executive device; the preprocessed data are stored in a real-time database, and section alignment is conducted; latest real-time section data are taken out for input abnormal detection, selection judgment, synchronization judgment and output abnormal detection; control logic calculation is carried out on data meeting control start conditions, intermediate data generated in the calculation process are stored, a control command is issued to a wide area damping control executive device, and therefore wide area damping control can be conducted on an electric system. According to the method, a wide area damping control system can be more reliable, flexible and practical.