A method for processing a carrier, comprising: receiving, by a terminal, Downlink Control Information, DCI, within a first time unit; and activating or deactivating, by the terminal, a component carrier corresponding to the DCI based on an indication of the DCI, wherein activating or deactivating, by the terminal, the component carrier corresponding to the DCI based on the indication of the DCI comprises: activating or deactivating, by the terminal, the component carrier corresponding to the DCI, when a value of a specific field of the DCI is a specific value, wherein when a value of a second specific field of the DCI is a second specific value, deactivating, by the terminal, the component carrier corresponding to the DCI in a first deactivation mode; and wherein when the value of the second specific field is a third specific value, deactivating, by the terminal, the component carrier corresponding to the DCI in a second deactivation mode, wherein when the terminal deactivates the component carrier corresponding to the DCI in the first deactivation mode, a behavior of the terminal on the component carrier comprises at least one of following behaviors: not sending any Sounding Reference Signal, SRS; not performing any measurement of Channel Quality Indicators, CQIs, and not reporting any CQI, Precoding Matrix Indicator, PMI, Rank Indication, RI or Precoding Type Indication, PTI; not transmitting uplink data; not detecting any Physical Downlink Control Channel, PDCCH, used for the component carrier and transmitted on the component carrier; or reducing a frequency of a measurement, if it is used as a reference for a path loss measurement in an uplink power control, wherein when the terminal deactivates the component carrier corresponding to the DCI in the second deactivation mode, a behavior of the terminal on the component carrier comprises at least one of following behaviors: performing a measurement of a CQI, reporting at least one kind of information of a CQI, a PMI, an RI or a PTI; or performing a Radio Resource Management, RRM, measurement. receiving, by a terminal, Downlink Control Information, DCI, within a first time unit; and activating or deactivating, by the terminal, a component carrier corresponding to the DCI based on an indication of the DCI, wherein activating or deactivating, by the terminal, the component carrier corresponding to the DCI based on the indication of the DCI comprises: activating or deactivating, by the terminal, the component carrier corresponding to the DCI, when a value of a specific field of the DCI is a specific value, wherein when a value of a second specific field of the DCI is a second specific value, deactivating, by the terminal, the component carrier corresponding to the DCI in a first deactivation mode; and wherein when the value of the second specific field is a third specific value, deactivating, by the terminal, the component carrier corresponding to the DCI in a second deactivation mode, activating or deactivating, by the terminal, the component carrier corresponding to the DCI, when a value of a specific field of the DCI is a specific value, wherein when a value of a second specific field of the DCI is a second specific value, deactivating, by the terminal, the component carrier corresponding to the DCI in a first deactivation mode; and wherein when the value of the second specific field is a third specific value, deactivating, by the terminal, the component carrier corresponding to the DCI in a second deactivation mode, wherein when the terminal deactivates the component carrier corresponding to the DCI in the first deactivation mode, a behavior of the terminal on the component carrier comprises at least one of following behaviors: not sending any Sounding Reference Signal, SRS; not performing any measurement of Channel Quality Indicators, CQIs, and not reporting any CQI, Precoding Matrix Indicator, PMI, Rank Indication, RI or Precoding Type Indication, PTI; not transmitting uplink data; not detecting any Physical Downlink Control Channel, PDCCH, used for the component carrier and transmitted on the component carrier; or reducing a frequency of a measurement, if it is used as a reference for a path loss measurement in an uplink power control, wherein when the terminal deactivates the component carrier corresponding to the DCI in the second deactivation mode, a behavior of the terminal on the component carrier comprises at least one of following behaviors: performing a measurement of a CQI, reporting at least one kind of information of a CQI, a PMI, an RI or a PTI; or performing a Radio Resource Management, RRM, measurement. not sending any Sounding Reference Signal, SRS; not performing any measurement of Channel Quality Indicators, CQIs, and not reporting any CQI, Precoding Matrix Indicator, PMI, Rank Indication, RI or Precoding Type Indication, PTI; not transmitting uplink data; not detecting any Physical Downlink Control Channel, PDCCH, used for the component carrier and transmitted on the component carrier; or reducing a frequency of a measurement, if it is used as a reference for a path loss measurement in an uplink power control, wherein when the terminal deactivates the component carrier corresponding to the DCI in the second deactivation mode, a behavior of the terminal on the component carrier comprises at least one of following behaviors: performing a measurement of a CQI, reporting at least one kind of information of a CQI, a PMI, an RI or a PTI; or performing a Radio Resource Management, RRM, measurement.