六朝是中国文学上的自觉时代，骈文兴盛。过去的研究，对骈文持否定态度的多，作肯定的少。本文以西学和日本学中的相关观念为参照系，文史结合，重新认识了散文、骈文和美文的基本特征，并尝试作了界说。文章认为：骈文属于散文的大范畴，骈散对立的最根本差别不在用韵与否，不在句子齐整与否，而在于句子结构即语法成分的对称。较之众多的浮泛之论，本文以较深的个人体验推动了文体学研究。 The Six Dynasties is a conscious era in Chinese literature. In the past, there were few positive affirmations about the negative attitude toward 骈. This article takes the related concepts in western studies and Japanese studies as the frame of reference and the combination of literature and history to re-understand the basic features of prose, prose and beauty and try to make a definition. The article holds that: Prose is a large category of essay. The most fundamental difference between emancipation and opposition is not the use of rhyme or not, not the alignment of the sentence or not, but the syntactic structure of the sentence structure. Compared with many floating theories, this paper promotes stylistic research with a deeper personal experience.