The present invention relates to a method for receiving a paging signal in a wireless communication system, and a device therefor, the method comprising the steps of: determining index information indicating a wake up signal (WUS) resource; and monitoring a WUS on the basis of the determined index information, wherein, when a user equipment (UE) supports machine type communication (MTC), the index information indicating the WUS resource is determined on the basis of identification information of the UE, parameters related to a discontinuous reception (DRX) cycle of the UE, information related to the number of paging narrowbands, and information related to the number of UE groups for the WUS.