A radio link failure handling method performed by a base station, the method comprising: • when the base station learns that a relay link between the base station and remote user equipment, UE, fails and a first cellular direct link between the base station and the remote UE is normal, sending, by the base station, a first reconfiguration message to the remote UE on the first cellular direct link, and sending a second reconfiguration message to relay UE on a second cellular direct link, wherein the relay link comprises a terminal-to-terminal direct link between the remote UE and the relay UE and the second cellular direct link between the relay UE and the base station, the failure of the relay link comprises at least one of a failure of the terminal-to-terminal direct link and a failure of the second cellular direct link, the first reconfiguration message is used to instruct the remote UE to switch a transmission path of a communication service from the relay link to the first cellular direct link, and the second reconfiguration message is used to instruct the relay UE to delete link related information corresponding to the remote UE,, • wherein before the sending, by the base station, the first reconfiguration message to the remote UE and before the sending, by the base station, the second reconfiguration message to the relay UE, the method comprises: ∘ in a first alternative, receiving an indication message from the relay UE on the second cellular direct link, wherein the indication message is used to indicate that the terminal-to-terminal direct link fails, or ∘ in a second alternative instead of the first alternative, receiving a Radio Resource Control, RRC, reestablishment request message from the relay UE on the second cellular direct link, wherein the RRC reestablishment request message is used to indicate that a downlink between the relay UE and the base station fails, ∘ learning, based on the received indication message or based on the received RRC reestablishment request message, that the relay link fails. • when the base station learns that a relay link between the base station and remote user equipment, UE, fails and a first cellular direct link between the base station and the remote UE is normal, sending, by the base station, a first reconfiguration message to the remote UE on the first cellular direct link, and sending a second reconfiguration message to relay UE on a second cellular direct link, wherein the relay link comprises a terminal-to-terminal direct link between the remote UE and the relay UE and the second cellular direct link between the relay UE and the base station, the failure of the relay link comprises at least one of a failure of the terminal-to-terminal direct link and a failure of the second cellular direct link, the first reconfiguration message is used to instruct the remote UE to switch a transmission path of a communication service from the relay link to the first cellular direct link, and the second reconfiguration message is used to instruct the relay UE to delete link related information corresponding to the remote UE,, • wherein before the sending, by the base station, the first reconfiguration message to the remote UE and before the sending, by the base station, the second reconfiguration message to the relay UE, the method comprises: ∘ in a first alternative, receiving an indication message from the relay UE on the second cellular direct link, wherein the indication message is used to indicate that the terminal-to-terminal direct link fails, or ∘ in a second alternative instead of the first alternative, receiving a Radio Resource Control, RRC, reestablishment request message from the relay UE on the second cellular direct link, wherein the RRC reestablishment request message is used to indicate that a downlink between the relay UE and the base station fails, ∘ learning, based on the received indication message or based on the received RRC reestablishment request message, that the relay link fails. ∘ in a first alternative, receiving an indication message from the relay UE on the second cellular direct link, wherein the indication message is used to indicate that the terminal-to-terminal direct link fails, or ∘ in a second alternative instead of the first alternative, receiving a Radio Resource Control, RRC, reestablishment request message from the relay UE on the second cellular direct link, wherein the RRC reestablishment request message is used to indicate that a downlink between the relay UE and the base station fails, ∘ learning, based on the received indication message or based on the received RRC reestablishment request message, that the relay link fails.