ECU software refreshing method and system based on ODX

The invention relates to an ODX-based ECU software refreshing method and system, and the method comprises the following steps: obtaining an ODX-F file, and carrying out the analysis of all levels of nodes of the ODX-F file, so as to obtain a storage address of a BIN file, segment information in the BIN file, and a verification algorithm and a verification reference value of the BIN file; reading the content of the BIN file according to the storage address, and calculating a verification true value of the BIN file according to the content of the BIN file and the verification algorithm; and comparing the verification true value with the verification reference value, if the verification true value is the same as the verification reference value, transmitting the content of the BIN file to an ECU according to the fragment information so as to refresh ECU software, and if the verification true value is different from the verification reference value, ending the ECU software refreshing process. According to the met