A transmission configuration method, which is applied to a base station, the method comprising: determining that a terminal is allowed to report a changed transmission capability when a transmission capability changes; generating a first configuration information, the first configuration information indicating that the terminal is allowed to report the changed transmission capability when the transmission capability changes; and sending the first configuration information to the terminal, such that when the transmission capability changes, the terminal obtains the changed transmission capability according to the first configuration information and sends the changed transmission capability to the base station; characterised in that determining that a terminal is allowed to report a changed transmission capability when a transmission capability changes comprises: receiving an initial capability reporting information sent by the terminal, the initial capability reporting information comprises an initial transmission capability of the terminal; and determining that the terminal is allowed to report the changed transmission capability when the transmission capability changes according to the initial transmission capability of the terminal, wherein initial transmission capability of the terminal comprises all frequency band combinations and/or channel combinations that the terminal is configured to support without generating intermodulation interference. determining that a terminal is allowed to report a changed transmission capability when a transmission capability changes; generating a first configuration information, the first configuration information indicating that the terminal is allowed to report the changed transmission capability when the transmission capability changes; and sending the first configuration information to the terminal, such that when the transmission capability changes, the terminal obtains the changed transmission capability according to the first configuration information and sends the changed transmission capability to the base station; characterised in that determining that a terminal is allowed to report a changed transmission capability when a transmission capability changes comprises: receiving an initial capability reporting information sent by the terminal, the initial capability reporting information comprises an initial transmission capability of the terminal; and determining that the terminal is allowed to report the changed transmission capability when the transmission capability changes according to the initial transmission capability of the terminal, wherein initial transmission capability of the terminal comprises all frequency band combinations and/or channel combinations that the terminal is configured to support without generating intermodulation interference. receiving an initial capability reporting information sent by the terminal, the initial capability reporting information comprises an initial transmission capability of the terminal; and determining that the terminal is allowed to report the changed transmission capability when the transmission capability changes according to the initial transmission capability of the terminal, wherein initial transmission capability of the terminal comprises all frequency band combinations and/or channel combinations that the terminal is configured to support without generating intermodulation interference.