Abstract: Establishing an effective health condition evaluation model is a key issue to be solved in the process of research on the health status evaluation methods for power station buildings（structures） and auxiliary facilities. Based on the existing research on control parameters, detection methods and limits of substation health condition,a model suitable for substation health condition evaluation is built with combination of analytic hierarchy process and fuzzy comprehensive evaluation theory. In contrast to the existing traditional evaluation methods, the model features clear evaluation logic levels, full range of evaluation scope and evaluation process easy to use.