The invention discloses a virtual maintenance based maintainability analysis method for an aircraft part. Firstly, a maintenance attribute value of the to-be-analyzed aircraft part is quantitatively determined, wherein the maintenance attribute value comprises human factor engineering, reachability, simplified design, modularization, standardization and interchangeability, and testability; secondly, a natural language is quantitatively processed; thirdly, according to the obtained attribute value, performing weighted calculation on a comprehensive maintainability attribute value of the to-be-analyzed aircraft part; and finally, according to the comprehensive maintainability attribute value, calculating degree of membership, and obtaining comprehensive maintainability evaluation and partial evaluation of the to-be-analyzed aircraft part. According to the method, on the basis of determining maintainability influence attributes, each maintainability influence attribute is analyzed and inspected, an evaluation method for maintainability quantitative requirements is proposed, and parallel design-oriented maintainability qualitative analysis and evaluation are realized, so that design defects can be discovered in time and the improvement on maintainability design is facilitated.