Season corresponding to viscera was an important and special part of TCM visceral manifestation theory. From the perspective of cognitive linguistics, "Four seasons" can be seen as a "cognitive model" as important as "Yin Yang and the five elements". "Season corresponding to viscera" is a metaphor, which is based on experience, with the similarity as a link. It sets the four seasons as a source domain, and five viscera as the target domain. As for conceptual metaphor interpretation of "season corresponding to viscera", it needs the help of the theory of "possible world". Taking "kidney corresponds to winter" for example, it is the "winter world" constructing "kidney of the world", which is a kind of metaphor.