Abstract: This paper researched on the antecedents management system for EMU based on whole lifecycle, analyzed the main requirements of the system, proposed the system framework including antecedents initialization, collection of dynamic antecedents, exception handling and application of antecedents. With the sequence number management based on EMU configuration oriented. The system could integrate automatically and record dynamically the state data of EMU and parts through the whole lifecycle from design and use to scrap, supported sequence tracing, operation information management, antecedents configuration update and versions management, antecedents query. The system has achieved good results in the process of enterprise application.