Abstract: Art is the core theoretical proposition in Maritain's poetics, which is a kind of productive and creative action of mankind. The essence of art is the self-perfects of practice wisdom. It can be divided into two kinds: practical art and aesthetics art. Maritain's artistic theory has the unique aesthetics intension that is different from forefathers. It offers a new angle and thought to deeply realize and study the profound mystery of the art creation for us.