Disclosed is a method by which a user equipment (UE) configured to a discontinuous reception (DRX) operation receives a physical downlink control channel (PDCCH) in a wireless communication system. Particularly, the method can configure an active time for monitoring the PDCCH based on at least one of a plurality of conditions and receive the PDCCH through PDCCH monitoring occasions allocated within a duration of the active time, wherein the PDCCH monitoring occasions can be differently allocated based on the at least one condition.