The Call of the Wild is Jack London's famous novella. It is the most qualified work in the history of American literature to be called a world famous book, and is included in the must-read bibliography of the university liberal arts. So there will be many people to study this novel. A number of theses have discussed the novel. Of course, some people also studied from an ecological perspective. The paper ”Comparing the Call of the Wild and the Cocoa Sili Wolf from the Perspective of Ecological Literary Criticism” was written by ShaoLianlian（2017）. From the perspective of ecological literary criticism, the work compared the two works of Call of the Wild and Cocoa Seri Wolf, including contradictions and conflicts between humans and animals, common criticism of greedy humanity, and finally appealed to people to pay attention to the ecological environment. Respect for life. Realize the harmonious coexistence between man and nature, man and animal, and realize the sustainable development of man on earth. The paper ”Interpretation of Ecological Consciousness in Call of the Wild” was written by OuSijia(2014). The author wrote in three levels. Firstly, it expounded the phenomenon of ecological imbalance in the novel, which was written from two aspects: natural ecological imbalance and social spiritual ecological imbalance. Then it discussed the rescue of ecology. Finally, in order to save the balance between man and man, between man and nature, between man and society, return to nature, control desire, return to harmony and equality, and call for people to establish correct ecological awareness. The paper ”An Interpretation of the Ecological Theme of Man and Nature in The Call of the Wild#8217;”was wrtten by ZhaoXin(2013). This paper attempted to explore and analyze the ecological thought from the perspective of the ultimate concern of ecocriticism, and explored the master of the primitive wilderness, Bucker, who succumbed to the law of the jungle and returned to the primitive wilderness through modern civilization. After suffering and nine deaths, he achieved the breakthrough and transcendence in the desperate life. Finally, he pursued the "the true meaning of human ultimate care." There are many papers that analyzed the Call of the Wild from an ecological perspective. Most people first introduced the theory of ecological literature, and then elaborated the ecological consciousness embodied in The Call of the Wild. I found that very few people only elaborated on the ecological concept around the protagonist "Buck." Therefore, from the perspective of ecological literature, this paper focused on the the experience of protagonist "Buck" to explain the wildness of "Buck" and its relationship with nature.