Disclosed are a method for a base station and a UE transmitting/receiving a signal in a wireless communication system, and a device supporting same. According to one embodiment, a method for a UE transmitting/receiving a signal in a wireless communication system comprises the steps of: receiving, from a base station, configuration information about a carrier for one or more channel; and, on the basis of the received configuration information, transmitting and then receiving one or more channel. Therein, the one or more channel comprises at least one among a downlink control channel, a downlink shared channel and an uplink shared channel, and the carrier may be configured differently based on the channel being transmitted therethrough.