Abstract: Through the analysis of the different weight calculation methods，an optimization method is put forward.With the broad distance definition and the minimum variance，it determines the expert weight according to the error ratio.Integrating the initial index weight and expert weight，the overall index weight is determined，and the result comes out by comprehensive evaluation with fuzzy mathematics.An evaluation example on supervision project control level，through weight optimization method compared with the traditional calculation method，the optimization weight evaluation results more in line with the actual situation.

Key words: project control level, comprehensive evaluation, weight optimization, fuzzy mathematics

摘要： 在分析各种评价过程中权重计算方法基础上，提出了对评价指标权重的优化计算。采用最小方差理论，按照误差比进行确定专家权重，并将指标的原始权重向量与专家权重向量综合优化得到指标优化权重，然后运用模糊数学理论进行多层次综合评价。文中对陕西某监理单位项目控制水平进行实例评价，权重优化计算与传统权重计算进行比较分析，效果良好。

关键词: 项目控制水平, 综合评价, 权重优化, 模糊数学