The invention discloses an SOA-based real-time communication method between a dispatching center and transformer substations. The method is characterized in that based on a service bus architecture, the dispatching center is provided with a service requesting interface, and each transformer substation is provided with a service providing interface; the arranged interfaces are called when the dispatching center conducts communication with the transformer substations, and data interaction is conducted on a service bus through a remote motor communication module, wherein data interaction comprises two communication modes, namely the request/answer mode and the subscription/release mode. By means of the method, the communication rate is high, performance is reliable, and the real-time performance is high; moreover, communication combination is flexible, the expandability is good, good openness is obtained, debugging and maintaining are convenient, the requirement for good interactivity is met, and meanwhile high anti-interference capability is obtained.