A method for identifying a terminal, comprising: receiving, by a source eNB, a Radio Resource Control, RRC, reestablishment message from a terminal to which a Radio Link Failure, RLF, occurs, wherein the RRC reestablishment message comprises: a Cell Radio Network Temporary Identifier, C-RNTI, of the terminal in a cell where the RLF occurs, a Physical Cell Identity, PCI, of the cell where the RLF occurs, and a shortMAC-I; determining, by the source eNB that has received the RRC reestablishment message, all target eNBs according to the PCI of the cell where the RLF occurs in the RRC reestablishment message; sending, by the source eNB, the RLF information to the all target eNBs; wherein the RLF information comprises: the PCI of the cell where the RLF occurs, an Evolved Cell Global Identifier, ECGI, of a cell to which the RRC reestablishment is attempted, the C-RNTI of the terminal in the cell where the RLF occurs, and the shortMAC-I; receiving, by one of the all target eNBs, the RLF information; determining, by the one of the all target eNBs, one or more cells according to the received PCI, wherein the one or more cells is under coverage of the one of the all target eNBs; determining, by the one of the all target eNBs, whether the received C-RNTI is possessed of by one of the one or more cells; in the case it is determined the received C-RNTI is possessed of by one of the one or more cells, determining, by the one of the all target eNBs, a key and an integrity protection algorithm according to the received C-RNTI; inputting, by the one of the all target eNBs, the received PCI, C-RNTI and ECGI into the integrity protection algorithm, as well as using the key, to calculate a shortMAC-I; determining, by the one of the all target eNBs, whether the calculated shortMAC-I is the same as the received shortMAC-I; in the case that the calculated shortMAC-I is the same as the received shortMAC-I, determining, by the one of the all target eNBs, that the RLF does occur to the one of the one or more cells, and that the terminal is inside the one of the one or more cells; otherwise, determining that the RLF does not occur to the one of the one or more cells and that the terminal is not inside the one of the one or more cells. receiving, by a source eNB, a Radio Resource Control, RRC, reestablishment message from a terminal to which a Radio Link Failure, RLF, occurs, wherein the RRC reestablishment message comprises: a Cell Radio Network Temporary Identifier, C-RNTI, of the terminal in a cell where the RLF occurs, a Physical Cell Identity, PCI, of the cell where the RLF occurs, and a shortMAC-I; determining, by the source eNB that has received the RRC reestablishment message, all target eNBs according to the PCI of the cell where the RLF occurs in the RRC reestablishment message; sending, by the source eNB, the RLF information to the all target eNBs; wherein the RLF information comprises: the PCI of the cell where the RLF occurs, an Evolved Cell Global Identifier, ECGI, of a cell to which the RRC reestablishment is attempted, the C-RNTI of the terminal in the cell where the RLF occurs, and the shortMAC-I; receiving, by one of the all target eNBs, the RLF information; determining, by the one of the all target eNBs, one or more cells according to the received PCI, wherein the one or more cells is under coverage of the one of the all target eNBs; determining, by the one of the all target eNBs, whether the received C-RNTI is possessed of by one of the one or more cells; in the case it is determined the received C-RNTI is possessed of by one of the one or more cells, determining, by the one of the all target eNBs, a key and an integrity protection algorithm according to the received C-RNTI; inputting, by the one of the all target eNBs, the received PCI, C-RNTI and ECGI into the integrity protection algorithm, as well as using the key, to calculate a shortMAC-I; determining, by the one of the all target eNBs, whether the calculated shortMAC-I is the same as the received shortMAC-I; in the case that the calculated shortMAC-I is the same as the received shortMAC-I, determining, by the one of the all target eNBs, that the RLF does occur to the one of the one or more cells, and that the terminal is inside the one of the one or more cells; otherwise, determining that the RLF does not occur to the one of the one or more cells and that the terminal is not inside the one of the one or more cells.