The invention provides a real-time data synchronization interface and a realization method thereof. The method comprises the following steps: a real-time data synchronization request message is sent; the message carries the types of information which are in a unified message format and supported by both a data management system and a data operation system; and after the real-time data synchronization request message is received, the information carried therein is analyzed, and a real-time data synchronization response message is sent. The invention adopts data to change a notification triggering mechanism and a request/response mechanism. Moreover, the invention is applied to the interface machines of the data management system and the data operation system, adopts the XML format for encapsulation, and defines a unified, flexible and expandable message format in a detailed manner, thereby causing the whole data management network to keep the data up to date and maintain the highest processing speed.