A handover method, comprising: sending, by a first terminal device, a discovery message, wherein the discovery message comprises indication information that indicates that the first terminal device is to be handed over from a first network device to a second network device; obtaining, by the first terminal device, a second handover request that is sent by at least one second terminal device based on the discovery message, wherein the second handover request comprises first identification information, wherein the first identification information comprises identification information of the at least one second terminal device; and performing, by the first terminal device, handover of the first terminal device and the at least one second terminal device based on the first identification information, wherein the handover is handover from the first network device to the second network device; wherein the performing, by the first terminal device, handover of the first terminal device and the at least one second terminal device based on the first identification information comprises: sending, by the first terminal device, first handover assistance information to the first network device, wherein the first handover assistance information comprises identification information of the first terminal device and the identification information of the at least one second terminal device; receiving, by the first terminal device, first handover indication information sent by the first network device, wherein the first handover indication information comprises configuration information of the first terminal device and configuration information of the at least one second terminal device; and performing, by the first terminal device, handover from the first network device to the second network device based on the first handover indication information, and assisting, based on the first handover indication information, in handing over the at least one second terminal device from the first network device to the second network device. sending, by a first terminal device, a discovery message, wherein the discovery message comprises indication information that indicates that the first terminal device is to be handed over from a first network device to a second network device; obtaining, by the first terminal device, a second handover request that is sent by at least one second terminal device based on the discovery message, wherein the second handover request comprises first identification information, wherein the first identification information comprises identification information of the at least one second terminal device; and performing, by the first terminal device, handover of the first terminal device and the at least one second terminal device based on the first identification information, wherein the handover is handover from the first network device to the second network device; wherein the performing, by the first terminal device, handover of the first terminal device and the at least one second terminal device based on the first identification information comprises: sending, by the first terminal device, first handover assistance information to the first network device, wherein the first handover assistance information comprises identification information of the first terminal device and the identification information of the at least one second terminal device; receiving, by the first terminal device, first handover indication information sent by the first network device, wherein the first handover indication information comprises configuration information of the first terminal device and configuration information of the at least one second terminal device; and performing, by the first terminal device, handover from the first network device to the second network device based on the first handover indication information, and assisting, based on the first handover indication information, in handing over the at least one second terminal device from the first network device to the second network device. sending, by the first terminal device, first handover assistance information to the first network device, wherein the first handover assistance information comprises identification information of the first terminal device and the identification information of the at least one second terminal device; receiving, by the first terminal device, first handover indication information sent by the first network device, wherein the first handover indication information comprises configuration information of the first terminal device and configuration information of the at least one second terminal device; and performing, by the first terminal device, handover from the first network device to the second network device based on the first handover indication information, and assisting, based on the first handover indication information, in handing over the at least one second terminal device from the first network device to the second network device.