Abstract: Through the interaction with the virtual environment, virtual reality technology can achieve learning and training with vivid effect. Construction of virtual laboratory for electronic equipment will enable the students to master the principles of equipment and operation methods as soon as possible. Virtual reality is developed by using Vega technology to construct the auxiliary teaching system for electronic equipment virtual experiment with QT software platform, with the realization of the electronic equipment of virtual assembly and disassembly, the steps of the experiment demonstration and virtual experiment operation functions, which providing a virtual experiment environment autonomous learning for students.