The social changes in the Yuan Dynasty had a decisive influence on the formation of Chinese literati's seal cutting art. The Yuan Dynasty under the Mongols' rule had a big blow to the entire Han culture, and many aspects including the traditional social hierarchy, order, and concepts were obviously impacted (Fu Haibo & Cui Ruide 1998). Affected by this influence, the art of literati seal cutting realized aesthetic consciousness. The practice of literati seal cutting has also transitioned from the initial design of the seal surface to the whole process of design and production. And these changes are directly related to the change of people's mentality under the social background of the Yuan Dynasty. This article is mainly divided into two parts. The first part mainly discusses the current mainstream views in the academic circles about the formation time of literati seal cutting art, and reveals the rationality of the formation of literati seal cutting in the Yuan Dynasty through analysis. The second part mainly discusses the root cause of the formation of literati seal cutting in the Yuan Dynasty. This article believes that the real factor that promoted the formation of the seal cutting of the literati in the Yuan Dynasty is the change of the people's mentality under the background of the changes of times. When the literati participated in the practice of seal cutting, there was no ideological burden, and it was possible to realize whether they were doing this as a career or merely responding to their inner aesthetic appeal. The appearance of seal cutters, seal cutting theories, and seal cutting works indicate the formation of the true sense of the art of seal cutting by literati