A method for processing channel access, the method comprises: acquiring, by a wireless station, first subscription indication information or first subscription indication information and second subscription indication information from a received radio frame; determining, by the wireless station, a first delay access variable according to the first subscription indication information; and determining, by the wireless station, a second delay access variable according to the second subscription indication information; when the wireless station acquires the first subscription indication information and the second subscription indication information from the received radio frame and determines that the radio frame is not targeted to itself, determining, by the wireless station, delay time for accessing a channel according to the second delay access variable; and when the wireless station only acquires the first subscription indication information from the received radio frame and determines that the radio frame is not targeted to itself, determining, by the wireless station, delay time for accessing a channel according to the first delay access variable and a second delay access variable stored in the wireless station; the step of, when the wireless station acquires the first subscription indication information and the second subscription indication information from the received radio frame and determines that the radio frame is not targeted to itself, determining delay time for accessing a channel by the wireless station according to the second delay access variable comprises: comparing, by the wireless station, the second subscription indication information with the second delay access variable currently stored in the wireless station, selecting a greater value among them to update the second delay access variable, and ignoring a value of the first delay access variable or setting the first delay access variable to zero or setting the first delay access variable to a same value as the updated second delay access variable; determining, by the wireless station, the delay time for accessing the channel according to the updated second delay access variable. acquiring, by a wireless station, first subscription indication information or first subscription indication information and second subscription indication information from a received radio frame; determining, by the wireless station, a first delay access variable according to the first subscription indication information; and determining, by the wireless station, a second delay access variable according to the second subscription indication information; when the wireless station acquires the first subscription indication information and the second subscription indication information from the received radio frame and determines that the radio frame is not targeted to itself, determining, by the wireless station, delay time for accessing a channel according to the second delay access variable; and when the wireless station only acquires the first subscription indication information from the received radio frame and determines that the radio frame is not targeted to itself, determining, by the wireless station, delay time for accessing a channel according to the first delay access variable and a second delay access variable stored in the wireless station; the step of, when the wireless station acquires the first subscription indication information and the second subscription indication information from the received radio frame and determines that the radio frame is not targeted to itself, determining delay time for accessing a channel by the wireless station according to the second delay access variable comprises: comparing, by the wireless station, the second subscription indication information with the second delay access variable currently stored in the wireless station, selecting a greater value among them to update the second delay access variable, and ignoring a value of the first delay access variable or setting the first delay access variable to zero or setting the first delay access variable to a same value as the updated second delay access variable; determining, by the wireless station, the delay time for accessing the channel according to the updated second delay access variable.