Earth discourse and planetary perspective are important contents of Western ecological criticism. Since 1968, Western scholars have conducted various studies focusing on the relationship between ecological criticism and the local place, the Earth and other planets. During the 1960s, 1970s to 1990s, as well as the post 21st century, these studies have shown significant phased characteristics. The prominence of the Earth discourse and planetary vision in Western ecological criticism has effectively promoted the exploration and reflection of human ecological issues in academia.