Biological model, evolutionary model and formalistic model are the main theoretical research models in the study of the western art history The evolution of the three models forms the art and nonart criterion in different historical periods And the logical dynamic of the internal development in the system promotes the end of art This article analyzes the relationship between historical consciousness and artistic essence through reviewing the structure of the traditional models of artistic theory, to explain that the theory of “the end of art” comes from the narrow concept extension of art history, due to the setting of art boundary in traditional models Meanwhile, this article also analyzes the contradiction of the posthistory narrative in terms of the Danto’s discourse system in The End of Art, and reveals that the expansion of the boundary of art history is still unable to grasp the artistic essence On the contrary, lost in the new concept, art exceeds the historical boundary, and becomes a “concept” that is beyond expression Consequently, “postart history” falls into a predicament of ineffective writing