Imagery art works are not limited to the real representation of objective images, but the artist's subjective understanding and emotional infiltration account for more components. Artists often use exaggeration, deformation, reorganization and other techniques in this kind of works, or highlight structural characteristics, which do not conform to the proportion of objective objects and images, or emphasize that a certain color feeling changes the color relationship of objective objects and images; Or break the usual concept of time and space and create a fantasy.