The present invention relates to a method for transmitting and receiving a signal in a wireless communication system and a device therefor and, more particularly, the present invention relates to a method and a device therefor which comprise generating at least one wake-up signal (WUS) sequence, attempting to detect at least one WUS on the basis of the generated WUS sequence, and monitoring a paging signal in a paging occasion (PO) associated with at least one WUS if at least one WUS has been detected, wherein the WUS sequence is generated on the basis of a cyclic shift, a Zadoff-Chu sequence and a complex value associated with a scrambling sequence.