本論文為杜詩學的研究，主要探討清代詩評家沈德潛，以其格調派詩論品詩杜詩的形成背景、批評內容與優劣得失。因論述需要，本論文亦就沈德潛詩學與格調派理論稍作研析。全文總分為：「清代詩學與杜詩」、「沈德潛的詩學觀點與格調說」、「沈德潛對杜詩的態度：兼論葉燮的影響」、「沈德潛對杜詩的實際批評」、「沈德潛論杜評議」等部份。

This essay deals with issues arisen from the Poetry Criticism Theory introduced by Shen De Qian during Qing Dynasty, the time Chinese poems underwent another transformation. Shen’s evauation on Du’s poetry will be discussed further. Its pros and cons will be indicated in order to have better understanding of the theory. We will then talk about Shen’s contributions to the study of Du’s poetry. The significance of Du’s poetry and its impact on Chinese poems can be illustrated from our discussion.