Baron in the Tree is a novel by Italian writer Calvino. It points out the shortcomings in the real world with relaxed language and images, pursues higher integrity, and embodies the lightness and beauty of the novel style. The author Calvino used many symbolic techniques in his novels, such as "tree" symbolizing freedom, independence and transcendence of reality. In addition, there are many humorous, ironic and ironic elements in the novel, which adds a lot of interest to the novel.