Developing digital infrastructure and promoting the application of digital technology in the management of training institutions is currently an urgent issue for universities associated with the trend of digital transformation in the field of education and training towards building a smart university. Vinh University, with more than 1,000 officials, annually pays an average of more than 2,500 travel documents in many different fields of work. The manual issuance and approval process is a waste of time and resources, has posed the problem of applying digital technology in online travel document management, improving management efficiency. This article presents the results of research and application of the online travel document management system, one of the digital technology application solutions of Vinh University.