The permanent exhibitions of Science and Technology Museum are major content of its exhibition and education, they are also the most important style for the public to take the informal science education. Whether the Science and attracts the public or not and if its exhibitions produce good effect on science education will mainly depend on its permanent exhibitions. How do we know that? Evaluation is the right way. We can learn a lot of information through evaluating, which includes: what do the public like? The deficiencies might exist in the exhibitions. If the display is scientific? If the audience content with the environment, and so on. Such information is essential for the manager to improve management level and enhance the effects of science popularization and education. Thus the author explored the evaluation model of permanent exhibitions of STM from different angles and evaluated some STMs in China. This article concerns some aspects of their research.