Sino-US relations are among the most important diplomatic relations among powers in the world. Environmental issues become a new field for the international community to compete for power and interests. Therefore, it is significant to explore the construction of China’s environmental image in the U.S. media. How is China’s ecological environment image shaped by “othering”? What are the discursive features and meanings? Taking the reviews of the New York Times, an American media, as the research object and using critical discourse analysis, this paper explores the image of China’s ecological environment from three dimensions, namely textual, discursive, and social practice. It is found that the image of China’s ecological environment from the perspective of “othering” has three aspects: a negative image of ecological environment pollution, a positive image of ecological environment development, and a highly politicized image of ecological environment governance. The U.S. mainstream media use tactics such as headline classification, intertextual quotation, and referential application to create conflicts and confrontation, thus forming a mechanism for “othering” China’s ecological image.