A station wake-up method including: sending, by a radio access point, a work time extension indication message to wake-up modules of n stations in associated stations, where a station includes a wake-up module and a communications module, the wake-up modules of the n stations are in an awake state, n is an integer greater than or equal to 1, and the work time extension indication message is used for instructing the wake-up modules of the n stations to add a new awake window after a current awake window; and sending, by the radio access point, a wake-up message to a wake-up module of at least one of the n stations, where the wake-up message is used for instructing the station to wake up a corresponding communications module, and the wake-up message is sent in a current awake window or a new awake window of the at least one station.