The theory of flavor is an important part of Chinese classical aesthetics In Song Dynasty, the ethos was pursuing thin flavor, which was different from that in Tang Dynasty The reasons for this essential change could be as related to the growing plebeian’s landowners and the thriving civilian culture It might also due to the infection of Neo-Confucianism, as well as clerisy’s habitation and mentality Moreover, the form of literature and the transformation of style might have played a role in such a change Reviewing this change, we found the possibility of extending the theory of flavor to a broader view And it also provides a clue about how the theory of flavor could be integrated into modern literature theory