Abstract: In order to meet the growing demand of railway audit for information technology and further strengthen the whole process management of audit business, this paper designed and implemented a new generation of railway audit management information system that integrated audit management, audit operations and data analysis. The system relied on micro-service architecture, cloud computing, transmission encryption, natural language processing, text similarity analysis and other technologies to implement in-depth mining and association analysis of financial data. The trial results in relevant departments indicate that this system can assist the development of audit work from traditional audit based auditing to risk prevention and service-oriented auditing, achieve effects both prevention and control, with a focus on prevention.