A method includes when a triggering instruction for triggering a periodic (buffer status report) BSR is received, obtaining a priority of a logical channel to which uplink data that is being sent belongs, and obtaining a priority of a logical channel to which the periodic BSR belongs, determining whether a priority of the uplink data is higher than a priority of the periodic BSR, and sending the uplink data to a base station at a priority higher than the priority of the periodic BSR when the priority of the uplink data is higher than the priority of the periodic BSR, or sending the periodic BSR to a base station at a priority higher than the priority of the uplink data when the priority of the uplink data is lower than the priority of the periodic BSR.