Study of modern Chinese character and Study of Chinese character structure’s history are both new topics which be concerned in recent years. The study about Wei rubbings regular script is not complete yet, and there are problem like the time span is too large and the direction is weak. So this article select Wei rubbings regular script in “Twenty Stone Inscriptions of Longmen Grottoes” as research object, Using the Chinese characters font theory, the Chinese characters structure theory and the Chinese characters optimization theory to analysis, Aimed at discover and discuss the grammatology significance of “Twenty Stone Inscriptions of Longmen Grottoes”. This article mainly consists of the following five parts: Firstly, filtering and organizing the Chinese characters in “Twenty Stone Inscriptions of Longmen Grottoes”, discover the value of research. Secondly, analysis the historical background when “Twenty Stone Inscriptions of Longmen Grottoes” chiseled. It is not an independent sector, but penetration in the whole analysis and discussion. Thirdly, combine the research findings in the academic of calligraphy, the Compare results of “Twenty Stone Inscriptions of Longmen Grottoes” and other inscription characters. And summarize the font style of Wei rubbings regular script in “Twenty Stone Inscriptions of Longmen Grottoes”. Fourthly, emphases on arrange and analyze the different in writing style, different in components, blended in the using of components, etc. in “Twenty Stone Inscriptions of Longmen Grottoes”. Fifthly, Submit “Easy to write”, “Easy to read”, “artistic” as the three principles of optimization in Chinese character, discuss the optimization and the insufficient in “Twenty Stone Inscriptions of Longmen Grottoes”. This article focus on the new areas in grammatology, try to innovate on the 6 research object, in order to supplement the history of graphic shape development in Chinese character. On theory, this article develops the rules of optimization in Chinese character, to make it more fundamental and general.

近代漢字學和漢字構形史都是近年來才逐漸被關注的課題，現有的關於北魏 石刻文字文字學研究並不充分，且存在時間跨度過大，針對性較弱的問題。因此 本文挑選“龍門二十品”中的魏碑楷書文字為研究對象，藉助漢字字體學、漢字構 形學和漢字優化理論進行分析，旨在發現和討論“龍門二十品”文字學意義。 本文主要分以下五個部份： 首先，對“龍門二十品”中的文字進行篩選和整理，並從中發現研究價值； 然後，分析“龍門二十品”刊鑿的時代背景，這不是一個獨立的板塊，而是滲 透於全文的分析討論之中的； 第三步，結合書法學界的已有成果並將其與不同時期不同風格的石刻文本對 比，總結“龍門二十品”魏碑楷書文字的字體風格。 第四步，重點整理分析“龍門二十品”中表現出來的異寫、異構、構件混同等 構形現象。 第五步，提出“易書寫”、“易識讀”、“美觀”的漢字優化三原則，並結合前兩 步討論“龍門二十品”中表現出來的優化與不足。 本文關注文字學界新領域，在研究對象上予以創新，以期對漢字字體和構形 的發展史加以補充。理論上則進一步發展了漢字優化理論的標準，使其更具有根 本性和普適性。