In view of the characteristics of "Microcomputer Principle and Interface Technology" experiment course, such as complex abstraction, easy damage of experimental instruments and poor reuse, this paper proposes to use virtual simulation technology to digitize the microcomputer principle experiment circuit and experiment process, so that students can complete the relevant experiment content on the virtual experiment platform. The virtual experiment platform provides students with an efficient, flexible, open and free experiment environment, enhances students' interest in experiment, improves experiment efficiency and experiment quality, and is of great help to improving students' independent innovation practice ability.