In recent years, with the rapid development of computer and network technology, computers are more active in people's vision, and the number of computer software is increasing. However, different types of computer software require different operating environments, seriously affecting the normal use of software by users. After the application of appropriate computer software data interface, the usage effect can be significantly improved. This paper describes the basic concept of computer software data interface and the principles to be followed in design, and analyzes its application status. The application mode is also discussed.