<p>A method and a device for switching. The switching method of the embodiment of the present invention includes receiving the switching indication information sent by the base station for requiring the user equipments to switch the transmission time interval (S110); sending the switching confirmation information which is used for confirming switching indication information to the base station (S120); and performing switching of the transmission time interval (S130). The switching method of the embodiment of the present invention includes sending the switching indication information for requiring the user to switch the transmission time interval to the user equipments; and receiving the switching confirmation information which is used for confirming the switch indication information. The user equipments of the embodiment of the present invention include a first receiving module, a sending module and a processing module. The base station of the embodiment of the present invention includes a first sending module and a first receiving module. The delay of switching of the transmission time interval is reduced and a fast switching of the transmission time interval is realized by the present invention.</p>
