A method for implementing an X2 proxy for a Mobile Relay, MR, characterized by comprising: implementing, by an initial node and a target node, X2 message interaction between the initial node and the target node through more than one X2 proxy of multiple nodes; wherein the MR currently accesses the initial node, and the MR is currently adjacent to the target node; wherein the multiple nodes comprise the initial node, the target node, and at least one other node, and before implementing the X2 message interaction between the initial node and the target node, the method comprises: among the multiple nodes, activating, by a previous-hop node, a function of a next-hop node serving as an X2 proxy of the previous-hop node; wherein the initial node, the target node, the next-hop node and the previous-hop node are Donor evolved Node Bs, DeNBs, and an X2 interface or other direct connection exists between the previous-hop node and the next-hop node, the previous-hop node is one of the initial node and the at least one other node (132, 133), and the next-hop node is is one of the at least one other node (132, 133) and the target node; and wherein the step of activating the function of the next-hop node serving as the X2 proxy of the previous-hop node comprises: activating, by the previous-hop node, the function of the next-hop node serving as the X2 proxy of the previous-hop node, by including an activation instruction into a message in an X2 connection establishment between the previous-hop node and the next-hop node; or activating, by the previous-hop node, the function of the next-hop node serving as the X2 proxy of the previous-hop node, by including an activation instruction into a message in an evolved Node B, eNB, configuration update. implementing, by an initial node and a target node, X2 message interaction between the initial node and the target node through more than one X2 proxy of multiple nodes; wherein the MR currently accesses the initial node, and the MR is currently adjacent to the target node; wherein the multiple nodes comprise the initial node, the target node, and at least one other node, and before implementing the X2 message interaction between the initial node and the target node, the method comprises: among the multiple nodes, activating, by a previous-hop node, a function of a next-hop node serving as an X2 proxy of the previous-hop node; wherein the initial node, the target node, the next-hop node and the previous-hop node are Donor evolved Node Bs, DeNBs, and an X2 interface or other direct connection exists between the previous-hop node and the next-hop node, the previous-hop node is one of the initial node and the at least one other node (132, 133), and the next-hop node is is one of the at least one other node (132, 133) and the target node; and wherein the step of activating the function of the next-hop node serving as the X2 proxy of the previous-hop node comprises: activating, by the previous-hop node, the function of the next-hop node serving as the X2 proxy of the previous-hop node, by including an activation instruction into a message in an X2 connection establishment between the previous-hop node and the next-hop node; or activating, by the previous-hop node, the function of the next-hop node serving as the X2 proxy of the previous-hop node, by including an activation instruction into a message in an evolved Node B, eNB, configuration update. among the multiple nodes, activating, by a previous-hop node, a function of a next-hop node serving as an X2 proxy of the previous-hop node; wherein the initial node, the target node, the next-hop node and the previous-hop node are Donor evolved Node Bs, DeNBs, and an X2 interface or other direct connection exists between the previous-hop node and the next-hop node, the previous-hop node is one of the initial node and the at least one other node (132, 133), and the next-hop node is is one of the at least one other node (132, 133) and the target node; and wherein the step of activating the function of the next-hop node serving as the X2 proxy of the previous-hop node comprises: activating, by the previous-hop node, the function of the next-hop node serving as the X2 proxy of the previous-hop node, by including an activation instruction into a message in an X2 connection establishment between the previous-hop node and the next-hop node; or activating, by the previous-hop node, the function of the next-hop node serving as the X2 proxy of the previous-hop node, by including an activation instruction into a message in an evolved Node B, eNB, configuration update. activating, by the previous-hop node, the function of the next-hop node serving as the X2 proxy of the previous-hop node, by including an activation instruction into a message in an X2 connection establishment between the previous-hop node and the next-hop node; or activating, by the previous-hop node, the function of the next-hop node serving as the X2 proxy of the previous-hop node, by including an activation instruction into a message in an evolved Node B, eNB, configuration update.