A method for accessing a new radio access technology, NR, cell, comprising: receiving (302, 402, 502), by a base station, a second message sent by a core network, the second message comprises first indication information; and sending (303, 405, 510), by a base station based on the second message, a first message to a terminal, wherein the first message is used to instruct the terminal to access an NR cell; wherein the second message is used to set up an evolved radio access bearer, E-RAB and the first indication information is used to indicate a quality of service, QoS, parameter; the method further comprises: in response to receiving the second message, determining, by the base station which is an LTE base station, whether an LTE cell on which the terminal currently camps meets the QoS parameter, when the base station determines that the LTE cell cannot meet the QoS parameter, sending, by the base station, a measurement report request to the terminal, wherein the measurement report request comprises NR instruction information, and the NR instruction information is used to instruct the terminal to perform NR cell measurement; receiving, by the base station, an NR cell measurement report sent by the terminal; and selecting, by the base station, an NR cell for the terminal based on the NR cell measurement report; wherein the sending (303, 405, 510) comprises: sending, by the base station, the first message that comprises an NR cell identifier to the terminal, the NR cell identifier corresponds to the NR cell selected by the base station, the first message is used to instruct the terminal to access an NR cell according to the NR cell identifier; or the second message is used to page the terminal, the first indication information comprises NR service type indication information, and an NR service type indicated by the NR service type indication information needs to be transmitted in an NR cell; and the method further comprises: in response to receiving the second message, determining, by the base station, whether the base station can carry an NR service type indicated by the NR service type indication information; and if the base station determines that the base station cannot carry a service indicated by the NR service type indication information, adding, by the base station, second indication information to the first message; wherein the sending (303, 405, 510) comprises: sending, by the base station to the terminal, the first message that carries the second indication information, wherein the second indication information is NR instruction information, and the NR instruction information is used to instruct the terminal to select an NR cell for access. receiving (302, 402, 502), by a base station, a second message sent by a core network, the second message comprises first indication information; and sending (303, 405, 510), by a base station based on the second message, a first message to a terminal, wherein the first message is used to instruct the terminal to access an NR cell; wherein the second message is used to set up an evolved radio access bearer, E-RAB and the first indication information is used to indicate a quality of service, QoS, parameter; the method further comprises: in response to receiving the second message, determining, by the base station which is an LTE base station, whether an LTE cell on which the terminal currently camps meets the QoS parameter, when the base station determines that the LTE cell cannot meet the QoS parameter, sending, by the base station, a measurement report request to the terminal, wherein the measurement report request comprises NR instruction information, and the NR instruction information is used to instruct the terminal to perform NR cell measurement; receiving, by the base station, an NR cell measurement report sent by the terminal; and selecting, by the base station, an NR cell for the terminal based on the NR cell measurement report; wherein the sending (303, 405, 510) comprises: sending, by the base station, the first message that comprises an NR cell identifier to the terminal, the NR cell identifier corresponds to the NR cell selected by the base station, the first message is used to instruct the terminal to access an NR cell according to the NR cell identifier; or the second message is used to page the terminal, the first indication information comprises NR service type indication information, and an NR service type indicated by the NR service type indication information needs to be transmitted in an NR cell; and the method further comprises: in response to receiving the second message, determining, by the base station, whether the base station can carry an NR service type indicated by the NR service type indication information; and if the base station determines that the base station cannot carry a service indicated by the NR service type indication information, adding, by the base station, second indication information to the first message; wherein the sending (303, 405, 510) comprises: sending, by the base station to the terminal, the first message that carries the second indication information, wherein the second indication information is NR instruction information, and the NR instruction information is used to instruct the terminal to select an NR cell for access.