Main Street written by Sinclair Lewis is rich in meaning and with high value. The existing research ranges from realism, modernism, and narrative techniques. However, the research on Main Street from the perspective of new criticism is limited to irony, which is only a part of the new criticism and is not sufficient and in-depth. Moreover, generally speaking, researching results are few. This paper tries to apply a new critical analysis of Main Street, including four dimensions-tradition and individual, structure and muscle, polysemy and non-generative - to explain innovational spirit. First, Main Street under the rebellious spirit has modernism and originality, which ensures the author's distinctive characteristics. Second, this paper explores the tension beauty of characters under the theme of rebellious spirit through quantitative analysis, due to its vividness, simplicity, universality and rationality. The plot tensions verify in case of structure and muscle, but literature features in both literariness and accuracy. Third, the ambiguity reflects the way in which tension presents, which is an indispensable part of literature. Fourth, innovational spirit gradually verifies from invisibility to visibility through character and rural culture, whose process is non-generative.