A configuration activation/deactivation method, comprising: transmitting, to a terminal, activation/deactivation information for indicating activation/deactivation of multiple transmission configurations; wherein the multiple transmission configurations are associated with configuration information of the activation/deactivation information, wherein, the multiple transmission configurations are transmission configurations associated with a first search space, SS or a first control resource set, CORESET in the configuration information of the activation/deactivation information, the first SS is an SS where the activation/deactivation information is detected, and the first CORESET is a CORESET where the activation/deactivation information is detected; or a first field of the activation/deactivation information is used for indicating activation/deactivation of first configuration information that is same among the multiple transmission configurations, wherein the first field is used for at least one of the following: indicating a serial number of a second configuration index group, wherein the second configuration index group comprises configuration indexes of the multiple transmission configurations; indicating a configuration index corresponding to an initial transmission configuration among the multiple transmission configurations arranged in sequence; indicating the configuration index corresponding to the initial transmission configuration among the multiple transmission configurations arranged in sequence and a quantity of the multiple transmission configurations; or indicating a serial number of a first element in a configuration index set, wherein the first element in the configuration index set corresponds to the configuration index of the initial transmission configuration among the multiple transmission configurations arranged in sequence and the quantity of the multiple transmission configurations. transmitting, to a terminal, activation/deactivation information for indicating activation/deactivation of multiple transmission configurations; wherein the multiple transmission configurations are associated with configuration information of the activation/deactivation information, wherein, the multiple transmission configurations are transmission configurations associated with a first search space, SS or a first control resource set, CORESET in the configuration information of the activation/deactivation information, the first SS is an SS where the activation/deactivation information is detected, and the first CORESET is a CORESET where the activation/deactivation information is detected; or a first field of the activation/deactivation information is used for indicating activation/deactivation of first configuration information that is same among the multiple transmission configurations, wherein the first field is used for at least one of the following: indicating a serial number of a second configuration index group, wherein the second configuration index group comprises configuration indexes of the multiple transmission configurations; indicating a configuration index corresponding to an initial transmission configuration among the multiple transmission configurations arranged in sequence; indicating the configuration index corresponding to the initial transmission configuration among the multiple transmission configurations arranged in sequence and a quantity of the multiple transmission configurations; or indicating a serial number of a first element in a configuration index set, wherein the first element in the configuration index set corresponds to the configuration index of the initial transmission configuration among the multiple transmission configurations arranged in sequence and the quantity of the multiple transmission configurations. indicating a serial number of a second configuration index group, wherein the second configuration index group comprises configuration indexes of the multiple transmission configurations; indicating a configuration index corresponding to an initial transmission configuration among the multiple transmission configurations arranged in sequence; indicating the configuration index corresponding to the initial transmission configuration among the multiple transmission configurations arranged in sequence and a quantity of the multiple transmission configurations; or indicating a serial number of a first element in a configuration index set, wherein the first element in the configuration index set corresponds to the configuration index of the initial transmission configuration among the multiple transmission configurations arranged in sequence and the quantity of the multiple transmission configurations.