The purpose of this study is to study Hemingway’s works from an ecological point of view. There have been many artists who use nature as a background or subject in their works. However, if the artist’s view of nature does not match the ecology world view that seeks a way for nature and humans to coexist, such works will be difficult to be subject to ecology criticism. Considering that Hemingway was instructed to observe natural ecosystems objectively from a scientific point of view from his father from an early age, it can be seen that he naturally acquired the skills as a naturalist writer from an early age. Influenced by the motto of the Agassiz Association, which emphasized that ecological research should be conducted through direct contact with nature, Hemingway developed a habit of meticulously observing natural ecosystems. Therefore, we can find many ecological implications in his literary attempts. In addition, he regards deception, loss of humanity, and disregard for life caused by the evils of industrial civilization as the greatest tragedy of mankind. These are the ecological implications found in his works. In this paper, the background of the author’s ecological imagination will be examined in detail. And we will examine how his ecological view of life is reflected in his non-fiction and other short stories and novels.