Abstract: On the basis of making investigations, using the analytic hierarchy process, it is set up an operable tertiary evaluation index system with clear hierarchies and integral contents, which can reflect building energy saving. According to network analysis of the advanced design, technology, material and technical application, it is realized the appraisal of the comprehensive energy- conserving result instead of the traditional evaluation of single project, which can make the appraisal of comprehensive energy- conservation of the building more scientific and rational.