A resource allocation method for Vehicle-to-Everything, V2X, service, characterized by comprising: acquiring resource allocation auxiliary information of a secondary link with a resource allocation requirement, wherein the resource allocation auxiliary information is indicated by a report resource for transmitting the secondary link information, and said acquiring the resource allocation auxiliary information of the secondary link comprises acquiring Channel Quality Information, CQI, and Rank indicator,RI, of the secondary link; and transmitting secondary link information, wherein the secondary link information comprises the resource allocation auxiliary information, the resource allocation auxiliary information is associated with a destination identifier of the secondary link, and said transmitting the secondary link information comprises: determining a combination of CQI and RI, wherein the CQI and the RI of the secondary link belong to the combination of CQI and RI, and the combination of CQI and RI is determined by configuration or pre-configuration; determining the report resource based on the combination of CQI and RI, wherein an association relationship between the combination of CQI and RI and the report resource is determined by configuration or pre-configuration; and transmitting the secondary link information using the report resource, wherein the secondary link information comprises the destination identifier of the secondary link. acquiring resource allocation auxiliary information of a secondary link with a resource allocation requirement, wherein the resource allocation auxiliary information is indicated by a report resource for transmitting the secondary link information, and said acquiring the resource allocation auxiliary information of the secondary link comprises acquiring Channel Quality Information, CQI, and Rank indicator,RI, of the secondary link; and transmitting secondary link information, wherein the secondary link information comprises the resource allocation auxiliary information, the resource allocation auxiliary information is associated with a destination identifier of the secondary link, and said transmitting the secondary link information comprises: determining a combination of CQI and RI, wherein the CQI and the RI of the secondary link belong to the combination of CQI and RI, and the combination of CQI and RI is determined by configuration or pre-configuration; determining the report resource based on the combination of CQI and RI, wherein an association relationship between the combination of CQI and RI and the report resource is determined by configuration or pre-configuration; and transmitting the secondary link information using the report resource, wherein the secondary link information comprises the destination identifier of the secondary link. determining a combination of CQI and RI, wherein the CQI and the RI of the secondary link belong to the combination of CQI and RI, and the combination of CQI and RI is determined by configuration or pre-configuration; determining the report resource based on the combination of CQI and RI, wherein an association relationship between the combination of CQI and RI and the report resource is determined by configuration or pre-configuration; and transmitting the secondary link information using the report resource, wherein the secondary link information comprises the destination identifier of the secondary link.