Provided are a method by which a terminal performs an access barring check in a wireless communication system and a device for supporting the same. The method may include: a step for entering an RRC_INACTIVE state; a step for performing the access barring check on a cell; a step for checking that access to the cell is prevented as many times as the maximum number of access attempts; and a step for transitioning from the RRC_INACTIVE state to an RRC_IDLE state.