“Harmonious society”means building a well - off society, raised by the 16 th National Party Congress comp rehensively as one of the objectives putting forward in. How to understand and grasp the nature of the socialist harmonious society and its buildingway in China is of great significance. Based on the NationalBureau of Statistics establishment of a harmonious society statistical evaluation index system, the author uses the theory of fuzzy statistics to set up a mathematicalmodel of comp rehensive evaluation, which can be used to evaluate comp rehensively and accurately the degrees of social harmony of a region or a country.