A method for updating a location area of a User Equipment, UE, characterized in that, the method comprises: receiving, by an access network entity, a location-area updating request message transmitted by the UE, wherein the location-area updating request message comprises a Radio Access Network, RAN, notification area updating request; determining, by the access network entity according to the location-area updating request message, whether a Tracking Area Identity, TAI, list of the UE needs to be updated or not; and transmitting a location-area updating message to the UE by the access network entity, wherein the location-area updating message at least comprises target RAN notification area, RNA, information, the target RNA information is RNA information updated for the UE by the access network entity according to the RNA updating request, the transmitting the location-area updating message to the UE by the access network entity, comprises: under a condition that the TAI list of the UE needs to be updated, transmitting a Tracking Area Updating, TAU, request to a Core Network, CN, entity by the access network entity according to the location-area updating request message; receiving the target TAI list transmitted by the CN entity by the access network entity, wherein the target TAI list is updated for the UE by the CN entity according to the TAU request; transmitting the location-area updating message comprising the target RNA information and the target TAI list to the UE by the access network entity. receiving, by an access network entity, a location-area updating request message transmitted by the UE, wherein the location-area updating request message comprises a Radio Access Network, RAN, notification area updating request; determining, by the access network entity according to the location-area updating request message, whether a Tracking Area Identity, TAI, list of the UE needs to be updated or not; and transmitting a location-area updating message to the UE by the access network entity, wherein the location-area updating message at least comprises target RAN notification area, RNA, information, the target RNA information is RNA information updated for the UE by the access network entity according to the RNA updating request, the transmitting the location-area updating message to the UE by the access network entity, comprises: under a condition that the TAI list of the UE needs to be updated, transmitting a Tracking Area Updating, TAU, request to a Core Network, CN, entity by the access network entity according to the location-area updating request message; receiving the target TAI list transmitted by the CN entity by the access network entity, wherein the target TAI list is updated for the UE by the CN entity according to the TAU request; transmitting the location-area updating message comprising the target RNA information and the target TAI list to the UE by the access network entity. under a condition that the TAI list of the UE needs to be updated, transmitting a Tracking Area Updating, TAU, request to a Core Network, CN, entity by the access network entity according to the location-area updating request message; receiving the target TAI list transmitted by the CN entity by the access network entity, wherein the target TAI list is updated for the UE by the CN entity according to the TAU request; transmitting the location-area updating message comprising the target RNA information and the target TAI list to the UE by the access network entity.