Abstract: The mutual imitation of language art and image art has drawn much attention in the literary history at home and abroad. However, there is an asymmetry in terms of the mutual imitation: image imitating language is referred to as the clockwise imitation, while language imitating image the anticlockwise imitation. Lessing has realized this point in Laocoon and made a new discovery after incorporating it into the context of “the age of literature’s encountering image” that the primary reason for the asymmetry of mutual imitation lies in the different symbol attributes. Language is symbol of congruent reference, which is dominant, while image is symbol of phantom reference, which is weak. Therefore, deconstruction and expulsion, or delay and oblivion of image on the part of language are likely to occur when the two symbols share a text. Such being the case, language itself will not be harmed in the situation of literature visualization, while image, as a carrier and tool, helps spread literature.