Method for power management in wireless lan system and wireless terminal using same

A method for power management in a wireless LAN system according to the present specification comprises the steps of: receiving, by a user STA, from an AP, a beacon frame including TWT parameter information for a preset broadcast TWT service interval; switching from a doze state to an awake state in the broadcast TWT service interval on the basis of TWT parameter information; receiving, from the AP, a TWT service frame including subsequent TWT parameter information for a subsequent TWT service interval which is individually set for the user STA in the broadcast TWT service interval, wherein the subsequent TWT parameter information is information included in a MAC header of the TWT service frame; switching from the awake state to the doze state after the broadcast TWT service interval; and switching from the doze state to the awake state and performing communication with the AP in the subsequent TWT service interval on the basis of subsequent TWT parameter information.