A method for transmitting an uplink signal in multiple serving cells in a wireless communication system according to one embodiment of the present disclosure is performed by a terminal and may comprise the steps of: receiving a configuration of whether to activate an operation of repeating or segmenting a physical uplink control channel (PUCCH) in at least one secondary serving cell; and repeating or segmenting and transmitting a PUCCH in the at least one secondary serving cell according to the received configuration, wherein the configuration comprises information on the secondary serving cell and/or a bandwidth part (BWP) in which the repetition or segmentation operation is to be performed.