The embodiment of the invention discloses a method for transmitting a wireless frame. The method comprises the following steps: determining configuration information of the wireless frame; and performing uplink transmission of the wireless frame according to the configuration information of the wireless frame, wherein the wireless frame comprises at least three special sub-frames. Correspondingly, the embodiment of the invention further discloses a wireless network device. By adoption of the method disclosed by the invention, the number of the sub-frames applied to uplink transmission in the wireless frame can be increased, and then the number of the sub-frames used for sending detection signals is increased, thereby improving the timeliness of obtaining a downlink channel state.