A method for implementing an automatic retransmission function, applied to a wireless local area network, and comprising: sending, by a first station of the wireless local area network, a first message to a second station of the wireless local area network, wherein the first message carries automatic retransmission enable information and the automatic retransmission enable information is used for instructing that the automatic retransmission function be enabled or disabled; wherein in the case where the automatic retransmission enable information instructs that the automatic retransmission function is enabled, the instruction instructs that the second station configures an automatic retransmission buffer for current transmission and the instruction further instructs that in the case where the second station does not correctly receive a data frame or a retransmission frame of the data frame, the second station buffers the data frame or the retransmission frame of the data frame into the automatic retransmission buffer or performs combination processing of the retransmission frame of the data frame and one of the following data frames: the data frame buffered in the automatic retransmission buffer, the retransmission frame of the data frame buffered in the automatic retransmission buffer, or a combination-processed data frame buffered in the automatic retransmission buffer; and in the case where the automatic retransmission enable information instructs that the automatic retransmission function is disabled, the instruction instructs that the second station cancels the automatic retransmission buffer and the instruction further instructs that in the case where the second station does not correctly receive a data frame or a retransmission frame of the data frame, the second station discards the data frame or the retransmission frame; wherein in response to the automatic retransmission enable information instructing that the automatic retransmission function be enabled, further sending, by the first station, at least one of the following time information: duration in which the automatic retransmission function is enabled or information about calculation of the duration, or time at which the automatic retransmission function is disabled, wherein the duration in which the automatic retransmission function is enabled or the information about the calculation of the duration is used for instructing that timekeeping start from start time at which the automatic retransmission function is enabled and the automatic retransmission function be disabled when the duration ends; and wherein the time information is contained in the first message or in a second message sent by the first station. sending, by a first station of the wireless local area network, a first message to a second station of the wireless local area network, wherein the first message carries automatic retransmission enable information and the automatic retransmission enable information is used for instructing that the automatic retransmission function be enabled or disabled; wherein in the case where the automatic retransmission enable information instructs that the automatic retransmission function is enabled, the instruction instructs that the second station configures an automatic retransmission buffer for current transmission and the instruction further instructs that in the case where the second station does not correctly receive a data frame or a retransmission frame of the data frame, the second station buffers the data frame or the retransmission frame of the data frame into the automatic retransmission buffer or performs combination processing of the retransmission frame of the data frame and one of the following data frames: the data frame buffered in the automatic retransmission buffer, the retransmission frame of the data frame buffered in the automatic retransmission buffer, or a combination-processed data frame buffered in the automatic retransmission buffer; and in the case where the automatic retransmission enable information instructs that the automatic retransmission function is disabled, the instruction instructs that the second station cancels the automatic retransmission buffer and the instruction further instructs that in the case where the second station does not correctly receive a data frame or a retransmission frame of the data frame, the second station discards the data frame or the retransmission frame; wherein in response to the automatic retransmission enable information instructing that the automatic retransmission function be enabled, further sending, by the first station, at least one of the following time information: duration in which the automatic retransmission function is enabled or information about calculation of the duration, or time at which the automatic retransmission function is disabled, wherein the duration in which the automatic retransmission function is enabled or the information about the calculation of the duration is used for instructing that timekeeping start from start time at which the automatic retransmission function is enabled and the automatic retransmission function be disabled when the duration ends; and wherein the time information is contained in the first message or in a second message sent by the first station.