Provided are a method for a terminal receiving downlink data in a wireless communication system, and a device supporting same. The method may comprise the steps of: entering a radio resource control (RRC)_INACTIVE state; receiving a configuration associated with a first DRX cycle and a second DRX cycle; receiving a first paging message on the basis of the first DRX cycle; stopping the use of the first DRX cycle if the first paging message indicates that downlink data has been transmitted to the terminal without an RRC state transition; and receiving the downlink data from a base station in the RRC_INACTIVE state on the basis of the second DRX cycle.