A service bus linking method for linking a plurality of service buses together includes inputting to a service bus to be added a node identifier and a position of an existing service bus to be connected, and registering a node identifier and a position of the existing service bus in a bus node table to store identifiers and positions of the service bus to be added and an adjacent service bus; second a bus node table updating notification from the service bus to be added to the existing service bus; and registering a node identifier and a position of the service bus to be added in a bus node table of the existing table, in response to the bus node table updating notification.