It is significant to scientifically evaluate the thermal insulation solutions used in building envelope. Considering four solutions, a regional suitability evaluation model is established by analyzing some factors such as technology, construction and economy. The evaluation model is based on the analytic hierarchy process, and the weights of performance indices are acquired from Delphi techniques. Combining the qualitative and quantitative analysis, some problems can be found out in the practical application of the solutions. The proposed suitability evaluation model can give scientific evaluation for the application and development of the energy-saving wall materials in hot summer and cold winter zone in China.