Test code transcoding system and method, test device and chip test method

The invention provides a test code transcoding system comprising a transcoding unit used for converting hexadecimal input information into binary data streams, the input information comprising HEX data and host read/write requests, and the data streams comprising HEX data streams and read/write request data streams; the communication instruction decoding unit is connected with the output end of the transcoding unit and is used for converting the HEX data stream and the read/write request data stream into a communication instruction according to a communication protocol; the analysis unit is connected with the output end of the communication instruction decoding unit and is used for at least generating a starting position mark and an ending position mark in the communication instruction to obtain a complete communication instruction; and the link unit is connected with the output end of the analysis unit and is used for converting the complete communication instruction into a test code which can be identified