Combined with the requirements and characteristics of maintainability design for civil aircraft, virtual reality technology is introduced in aircraft maintainability design, analysis, verification work. This paper explains the process of virtual maintenance simulation. By analysis of visibility, entire reachability analysis and operation space analysis, the feasibility verification method of virtual maintenance is given, and the maintainability design evaluation is realized in the design. The factors influencing the maintainability design were found and improved in time in order to improve the aircraft maintainability.