A method for switching a relay node, comprising: sending, by a source base station of a Device-to-Device, D2D, relay node or a Mobile Management Entity, MME, relevant information about the D2D relay node to a target base station; and performing, by the target base station, a corresponding process according to the relevant information about the D2D relay node; wherein the step of performing, by the target base station, a corresponding process according to the relevant information about the D2D relay node comprises: determining, by the target base station, D2D relay configuration information for the D2D relay node according to the relevant information about the D2D relay node and sending a handover request acknowledgement message including the D2D relay configuration information to the source base station; wherein the method further comprises: sending, by the source base station, a handover command received from the target base station to the D2D relay node by means of a Radio Resource Control, RRC, reconfiguration message, wherein the handover command includes the D2D relay configuration information configured for the D2D relay node by the target base station; wherein the relevant information about the D2D relay node comprises at least one of the following information: relay capability information of the D2D relay node, wherein the relay capability information comprises at least one of the following: an indication for whether to support a D2D relay; an indication for whether to support a D2D relay from a UE to a network; and an indication for whether to support a D2D relay from a UE to another UE; an indication for whether being served as a D2D relay node; an indication for whether having an interest to serve as the D2D relay node; an indication for whether having a capability to serve as the D2D relay node; an indication for whether authorized to serve as the D2D relay node; a type of the D2D relay node that is being served as or has the interest to serve as or has the capability to serve as or is authorized to serve as the D2D relay node, wherein the type of the D2D relay node comprises: a D2D relay node for a relay from the UE to the network, and a D2D relay node for a relay from a UE to another UE; power-saving configuration information of the D2D relay node. sending, by a source base station of a Device-to-Device, D2D, relay node or a Mobile Management Entity, MME, relevant information about the D2D relay node to a target base station; and performing, by the target base station, a corresponding process according to the relevant information about the D2D relay node; wherein the step of performing, by the target base station, a corresponding process according to the relevant information about the D2D relay node comprises: determining, by the target base station, D2D relay configuration information for the D2D relay node according to the relevant information about the D2D relay node and sending a handover request acknowledgement message including the D2D relay configuration information to the source base station; wherein the method further comprises: sending, by the source base station, a handover command received from the target base station to the D2D relay node by means of a Radio Resource Control, RRC, reconfiguration message, wherein the handover command includes the D2D relay configuration information configured for the D2D relay node by the target base station; wherein the relevant information about the D2D relay node comprises at least one of the following information: relay capability information of the D2D relay node, wherein the relay capability information comprises at least one of the following: an indication for whether to support a D2D relay; an indication for whether to support a D2D relay from a UE to a network; and an indication for whether to support a D2D relay from a UE to another UE; an indication for whether being served as a D2D relay node; an indication for whether having an interest to serve as the D2D relay node; an indication for whether having a capability to serve as the D2D relay node; an indication for whether authorized to serve as the D2D relay node; a type of the D2D relay node that is being served as or has the interest to serve as or has the capability to serve as or is authorized to serve as the D2D relay node, wherein the type of the D2D relay node comprises: a D2D relay node for a relay from the UE to the network, and a D2D relay node for a relay from a UE to another UE; power-saving configuration information of the D2D relay node. relay capability information of the D2D relay node, wherein the relay capability information comprises at least one of the following: an indication for whether to support a D2D relay; an indication for whether to support a D2D relay from a UE to a network; and an indication for whether to support a D2D relay from a UE to another UE; an indication for whether being served as a D2D relay node; an indication for whether having an interest to serve as the D2D relay node; an indication for whether having a capability to serve as the D2D relay node; an indication for whether authorized to serve as the D2D relay node; a type of the D2D relay node that is being served as or has the interest to serve as or has the capability to serve as or is authorized to serve as the D2D relay node, wherein the type of the D2D relay node comprises: a D2D relay node for a relay from the UE to the network, and a D2D relay node for a relay from a UE to another UE; power-saving configuration information of the D2D relay node.