唐宋古文運動具有文體革新、解放的意義，除了打破傳統文體的窠臼，亦創造新體製。北宋歐陽脩承繼唐代韓愈、柳宗元的古文理念，並在二人締造的古文高峰上力求突破。本文以〈尹師魯墓誌銘〉、〈論尹師魯墓誌〉為考察對象，前者承繼春秋書法，深化碑誌文體，建立「意深語簡」的謹嚴義例；又會通詩人之意，造就「意深言緩」的抒情性；後者則孕育一種值得玩味的題跋新體，又二文所形成的互文性視野，使古文理論與創作實踐密切結合，成為歐陽脩有力的古文宣言。

The Classical Prose Movement in the Tang and Song Dynasties brought about reformation and liberation in prose styles, through which clichés were abandoned, and new styles were created. In the Northern Song Dynasty, Ouyang Xiu, whose ideas of classical prose were inherited from Han Yu and Liu Zong-Yuan in the Tang Dynasty, continued to break new grounds on the achievements of his predecessors. This paper studies two prose works of Ouyang Xiu, “Epitaph of Yin Zhu” and “On the epitaph of Yin Zhu.” The former perpetuates the style and spirit of The Spring and Autumn Annals (Chunqiu), as it gives depth to the genre of epitaph and establishes an example of seriousness, expressing profound meanings through plain prose. The work also retains its lyricism, as the poet-essayist infuses depth with reserved emotions and subtle prose. The latter prose work develops a new style for inscriptive writing which is worth studying. The inter-textuality between these two works demonstrates the close connection between theory and practice in classical prose, and becomes Ouyang Xiu’s powerful proclamation on classical prose.