X2 link network establishment method and system

The invention provides an X2 link network establishment method and system. The method comprises the steps that adjacent region information of all adjacent region base stations adjacent to a base station is acquired; whether X2 link connection exists between the base station and a corresponding adjacent base station is judged according to the adjacent region information, if not, address information of an adjacent region base station which has no X2 line connection with the base station is acquired; X2 link connection of the base station and the adjacent base station corresponding to the address information is established according to the address information; the X2 link connection comprises SCTP link connection and X2 logic connection. According to the X2 link network establishment method, the adjacent region information of all the adjacent region base stations adjacent to the base station is acquired, whether X2 link connection exists is judged according to the adjacent region information, and if not, the address information of the adjacent region base station is acquired, so that X2 link connection is established, and higher efficiency can be realized when the X2 link connection is established under the condition of network topology structure changes.