The research results in the field of artificial intelligence, such as Bayes network, are applied to safety analysis of civil aviation. Safety analysis of the complex civil aviation engineering maintenance system is realized. 本文借鉴人工智能领域的最新研究成果,将Bayes网络方法引入到航空安全分析中,实现了对复杂民航维修系统安全问题的分析。