Abstract:The core principle of "Moderate" was established in the pre-Han period.The process that it established also was a re-construct course,from the traditional meaning that pursue "just right harmonious" to the theory of nature and man of "with the result that moderate" unite as one,the dimension of the system is gradually open,whole and internality.In this rebuilding process,Taoists' idea essence meaning promote and the disposition talk about the depth of the meaning to explain,is the theories that can't be neglected.