A method for achieving high-speed data transmission is disclosed. The method includes: repacking a data packet to be transmitted using a preset bit width and adding a check code; for a correct response message, releasing system resources immediately, and for an incorrect response message, implementing an automatic retransmission operation on the data packet, thereby reducing the complexity and power consumption level of a chip, and ensuring the data exchange speed and quality. Also provided is a universal interface chip for achieving high-speed data transmission.