提出一个用于信息系统综合评价的数学模型，该模型能够适应对各评价对象进行评价的专家数目不一致，或参与评价某对象各指标的专家数目不一致的情况；同时，模型中引入了指标均衡度概念，使各指标间的协调、均衡程度在评价过程中得到反映；在模型中还包括了定量、定性指标，以及成本型、效益型和区间型等多种指标类型的处理，从而使该模型具有较大的通用性。 A mathematical model for comprehensive evaluation of information system is proposed. The model can adapt to the inconsistency of the number of experts evaluating each evaluation object or the number of experts involved in evaluating each target of an object. At the same time, the index equilibrium Concept, so that the coordination between the various indicators, the degree of equilibrium in the evaluation process is reflected in the model also includes quantitative and qualitative indicators, as well as cost, benefit and interval type and other indicators of the type of treatment, so that the model Has greater versatility.