Abstract: Task scheme evaluation refer to numerous factor in the complicated environment so it is difficult to be overall for evaluation index.The article recommended a kind of hiberarchy guideline system，which made evaluation index in an all-round way through thinning to develop criterion layer.In addition to the improvement of the FAHP，the level amount of index system was unrestricted and the corresponding calculation amount increased not big.And througth changing the formula of calculating index value in the arithmetic，the resolving power is improved and the credibility of optimum scheme is increased.

Key words: FAHP, scheme evaluation, scheme optimization, fuzzy consistent matrix

摘要： 对于复杂环境中任务方案的评价，由于涉及的因素众多使得评价指标不易全面，文中给出了一种层次化的指标体系，通过准则层细化出子准则层使评价指标全面化。加之对模糊层次分析法的改进，使得上述指标体系层次数目可以不受限制，层次数增加而相应计算量增加却不大；并且通过改换算法中常用的计算因素权值的公式，提高了方案评价的分辨率，增加了对方案优选结果的可信程度。

关键词: 模糊层次分析法, 方案评价, 方案优选, 模糊一致矩阵