The invention discloses a cross-regional distributed 
station interaction and 
data synchronization method. The method comprises: determining an involved region according to a business order; a source region 
station obtaining a plurality of business order states of target region stations through a shared 
bus; if 
state variation does not occur, setting a region logical lock for the target region 
station, to lock associated information, the source region station packaging the associated 
business data of the target region station, and correspondingly distributing the associated 
business data to each target region station, each target region station updating the associated 
business data and storing the data, releasing the region logical lock; if the 
state variation occurs, setting the region logical lock for the source region station in a reverse manner, to lock the associated information of the region, through the shared 
bus, notifying the target region stations, the target region stations obtaining information related to 
state variation of the region stations in a reverse manner, updating the source region station in a reverse manner, after 
data input and update are completed, releasing the region logical lock of the source region station. The method is high in interaction efficiency, and ensures 
data consistency and accuracy in an interaction process.