Abstract: Xun Zi has made the initiating contribution to the sociology in China and he is the founder of Qunxue and the sociology. With the core concept of Qun, his Qunxue formed a group of concepts and a system of concepts, advanced some propositions concerning Qun, explained the main idea of Qun, which runs through all the levels of the traditional Chinese ideals of 'self cultivation, family harmony, country management and world peace'. It becomes regulations and constraints the individual behavior and the whole society. Xunzi's Qunxue has an important influence on the social development in China and is the fine tradition of the sociology in China with the sustainable development.