A method for allocating sidelink resource, wherein the method comprises: reporting auxiliary information to a resource allocation management node; receiving configuration information of logical channel groups of a sidelink interface transmitted by the resource allocation management node, wherein the configuration information of logical channel groups of the sidelink interface is used to indicate that logical channels using different wireless access technologies correspond respectively to different logical channel groups; determining a logical channel group corresponding to a logical channel of the sidelink interface according to the configuration information of logical channel groups of the sidelink interface; reporting a Buffer Status Report, BSR, according to the determined logical channel group corresponding to the logical channel of the sidelink interface; receiving transmission resources of the sidelink interface allocated by a radio resource allocation management node according to the BSR; wherein the configuration information of logical channel groups of the sidelink interface is a mapping relationship between Quality of Service, QoS, parameters of the sidelink interface and logical channel group identifiers or a mapping relationship between logical channels of the sidelink interface and logical channel group identifiers, and logical channels in a same logical channel group only correspond to a kind of wireless access technology; the configuration information of logical channel groups of the sidelink interface is determined according to the auxiliary information; when the configuration information of logical channel groups of the sidelink interface is the mapping relationship between QoS parameters of the sidelink interface and logical channel group identifiers, the auxiliary information comprises all or a part of QoS parameters corresponding to each logical channel of a sidelink interface of a sidelink user equipment; when the configuration information of logical channel groups of the sidelink interface is the mapping relationship between logical channels of the sidelink interface and logical channel group identifiers, the auxiliary information comprises each logical channel identifier of a sidelink interface of a sidelink user equipment and corresponding QoS parameters, and a wireless access technology that each logical channel of the sidelink interface of the sidelink user equipment expects to use. reporting auxiliary information to a resource allocation management node; receiving configuration information of logical channel groups of a sidelink interface transmitted by the resource allocation management node, wherein the configuration information of logical channel groups of the sidelink interface is used to indicate that logical channels using different wireless access technologies correspond respectively to different logical channel groups; determining a logical channel group corresponding to a logical channel of the sidelink interface according to the configuration information of logical channel groups of the sidelink interface; reporting a Buffer Status Report, BSR, according to the determined logical channel group corresponding to the logical channel of the sidelink interface; receiving transmission resources of the sidelink interface allocated by a radio resource allocation management node according to the BSR; wherein the configuration information of logical channel groups of the sidelink interface is a mapping relationship between Quality of Service, QoS, parameters of the sidelink interface and logical channel group identifiers or a mapping relationship between logical channels of the sidelink interface and logical channel group identifiers, and logical channels in a same logical channel group only correspond to a kind of wireless access technology; the configuration information of logical channel groups of the sidelink interface is determined according to the auxiliary information; when the configuration information of logical channel groups of the sidelink interface is the mapping relationship between QoS parameters of the sidelink interface and logical channel group identifiers, the auxiliary information comprises all or a part of QoS parameters corresponding to each logical channel of a sidelink interface of a sidelink user equipment; when the configuration information of logical channel groups of the sidelink interface is the mapping relationship between logical channels of the sidelink interface and logical channel group identifiers, the auxiliary information comprises each logical channel identifier of a sidelink interface of a sidelink user equipment and corresponding QoS parameters, and a wireless access technology that each logical channel of the sidelink interface of the sidelink user equipment expects to use.