A carrier aggregation, CA, configuration information processing method, performed by a terminal, characterized in that the terminal is configured with measurement configuration information for a non-connected state, and the method comprises: in a process in which the terminal performs radio resource control, RRC, connection resumption, processing CA configuration information based on measurement behavior of the terminal in the non-connected state, or processing the CA configuration information based on the measurement behavior of the terminal in the non-connected state and according to the processing instruction sent by the network side device, wherein, the CA configuration information is access stratum context information stored on the terminal; and the processing instruction is used to instruct to resume at least partial information in the CA configuration information, or is used to instruct to clear at least partial information in the CA configuration information, the processing CA configuration information based on measurement behavior of the terminal in the non-connected state comprises: when the measurement behavior of the terminal in the non-connected state is valid, resuming at least partial information in the CA configuration information; or when the measurement behavior of the terminal in the non-connected state is invalid, clearing at least partial information in the CA configuration information; or, the processing the CA configuration information based on the measurement behavior of the terminal in the non-connected state and according to the processing instruction sent by the network side device comprises: when the measurement behavior of the terminal in the non-connected state is valid and the processing instruction is used to instruct to resume at least partial information in the CA configuration information, resuming at least partial information in to-be-resumed information indicated in the processing instruction. in a process in which the terminal performs radio resource control, RRC, connection resumption, processing CA configuration information based on measurement behavior of the terminal in the non-connected state, or processing the CA configuration information based on the measurement behavior of the terminal in the non-connected state and according to the processing instruction sent by the network side device, wherein, the CA configuration information is access stratum context information stored on the terminal; and the processing instruction is used to instruct to resume at least partial information in the CA configuration information, or is used to instruct to clear at least partial information in the CA configuration information, the processing CA configuration information based on measurement behavior of the terminal in the non-connected state comprises: when the measurement behavior of the terminal in the non-connected state is valid, resuming at least partial information in the CA configuration information; or when the measurement behavior of the terminal in the non-connected state is invalid, clearing at least partial information in the CA configuration information; when the measurement behavior of the terminal in the non-connected state is valid, resuming at least partial information in the CA configuration information; or when the measurement behavior of the terminal in the non-connected state is invalid, clearing at least partial information in the CA configuration information; or, the processing the CA configuration information based on the measurement behavior of the terminal in the non-connected state and according to the processing instruction sent by the network side device comprises: when the measurement behavior of the terminal in the non-connected state is valid and the processing instruction is used to instruct to resume at least partial information in the CA configuration information, resuming at least partial information in to-be-resumed information indicated in the processing instruction.