Gu Kaizhi plays an important role in the history of Chinese painting, and is praised as “Three Wonders” by contemporary people. Among them, figure painting is the most outstanding. Gu Kaizhi has profound and comprehensive cultural and artistic attainments, and has made remarkable achievements in aesthetic theory. “Fantasy” has become the core proposition of his painting theory and artistic creation idea, which not only makes a classic judgment for the development of China’s painting aesthetics, but also reveals the whole process of artistic creation. How does the creator interact and link with the real world, through the blending and meeting between the subject and the object, so as to show the emotions and thoughts contained in it incisively and vividly, and show the author’s subjective image by depicting the characters.