In order to improve the efficiency and to supply more sufficient information support, an intelligent fault diagnosis system
based on desktop virtual environment is proposed. In the first place, basic concepts and principles of virtual reality and
intelligent fault diagnosis technology are presented in this paper. Then, several essential implementation issues of the
system, including the system architecture, the 3D visualization of the fault diagnosis environment and the user interface
and so on, are also been discussed. Lastly, intelligent fault diagnosis technologies are elaborated, such as the rule base
and the strategy of the reasoning and control in the expert system, etc. Practical applications and experiments
demonstrate that the proposed approach is effective and robust.