Data transmission method, data transmission device and related equipment

The invention provides a data transmission method, a data transmission device and related equipment. The data transmission method comprises the following steps: acquiring a data packet to be transmitted; caching a data packet to be transmitted in a retransmission buffer area; the retransmission buffer area caches the data packets transmitted to the receiving end chip, and in the data packets transmitted to the receiving end chip, the data packets of which the transmitted time is longer than the preset time are covered by the data packets to be transmitted; transmitting the data packets to be transmitted to a receiving end chip in sequence; wherein the preset time comprises the delay time from the completion of data packet transmission to the reception of the error instruction, and the error instruction is an instruction which is sent by the receiving end chip and is used for indicating the transmission error of the data packet, so that a correct instruction does not need to be received, and the successfully t