A feedback method performed by a terminal device, comprising: receiving, by the terminal device, Downlink Control Information, DCI, transmitted by a network device, the DCI carrying first indication information indicating a state of at least one group of secondary cells, Scells, or at least one Scell, and the DCI being DCI in a first format or DCI in a second format; and transmitting, by the terminal device, second indication information to the network device, the second indication information indicating that the terminal device acknowledges receipt of the first indication information, the method further comprises: receiving, by the terminal device, second configuration information transmitted by the network device, the second configuration information being used to determine a first active BWP configuration corresponding to the DCI in the first format and a first active BWP configuration corresponding to the DCI in the second format, wherein the DCI in the first format is DCI corresponding to a wake up signal, WUS, and the DCI in the second format is DCI not corresponding to a WUS, wherein the DCI indicates a switching to an active state with a non-dormancy behaviour for which an active BWP is configured via the first active BWP configuration, and the active BWP is for the terminal device entering the non-dormancy behaviour. receiving, by the terminal device, Downlink Control Information, DCI, transmitted by a network device, the DCI carrying first indication information indicating a state of at least one group of secondary cells, Scells, or at least one Scell, and the DCI being DCI in a first format or DCI in a second format; and transmitting, by the terminal device, second indication information to the network device, the second indication information indicating that the terminal device acknowledges receipt of the first indication information, the method further comprises: receiving, by the terminal device, second configuration information transmitted by the network device, the second configuration information being used to determine a first active BWP configuration corresponding to the DCI in the first format and a first active BWP configuration corresponding to the DCI in the second format, wherein the DCI in the first format is DCI corresponding to a wake up signal, WUS, and the DCI in the second format is DCI not corresponding to a WUS, wherein the DCI indicates a switching to an active state with a non-dormancy behaviour for which an active BWP is configured via the first active BWP configuration, and the active BWP is for the terminal device entering the non-dormancy behaviour. receiving, by the terminal device, second configuration information transmitted by the network device, the second configuration information being used to determine a first active BWP configuration corresponding to the DCI in the first format and a first active BWP configuration corresponding to the DCI in the second format, wherein the DCI in the first format is DCI corresponding to a wake up signal, WUS, and the DCI in the second format is DCI not corresponding to a WUS, wherein the DCI indicates a switching to an active state with a non-dormancy behaviour for which an active BWP is configured via the first active BWP configuration, and the active BWP is for the terminal device entering the non-dormancy behaviour.