（隋大兴）唐长安城坊内的用地格局是建筑史研究中的一个难题，对于隋唐建筑史及中国古代城市规划史来说意义重大。为进一步探明坊内用地格局，本文尝试围绕坊内土地分配方法的讨论，从里坊源流、坊内道路体系、宅地分配标准、用地划分方法四个方面层层深入地展开分析和论述。理清（隋大兴）唐长安里坊制度的源流，无疑使我们对里坊内土地的纳民本质、里坊编民的方法以及里坊的规模形态特点首先有了宏观的了解，并认识到（隋大兴）唐长安里坊制度的完善成熟对唐代其他城市建设以及日本古代都城建设的影响，这种影响对现在分析（隋大兴）唐长安里坊制度有很大帮助。尽管坊内格局的实地考古资料稀缺，但大量文献记载为研究提供了可能。本文从道路系统入手，通过对坊内道路资料的重新挖掘和分析，对坊内的街、巷、曲等划分用地的骨架基本梳理清楚并获得了几点新的认识。以坊内土地分配政策为研究突破口的期待并非虚妄。为探讨坊内的住宅用地分配标准，本文横向引入日本古代四京的坊内法令和考古资料，纵向引入隋唐以前的田令资料进行比较，结合大量文献整理、图像资料的实例分析，认为坊内建筑用地规模至少存在两套分配标准，一是以官阶为基础的若干分坊的方法，用于各级官员；一是以亩为基本单位计口分田的方法，用于坊内百姓。进一步对王宅、各品阶官员住宅和平民百姓住宅的规模进行总结归纳。通过对具体住宅实例如敦煌壁画、出土陶屋等图像资料的研究，深入理解宅基地使用的功能需求和用地关系，尝试对靖安坊韩愈宅、永平坊寇鄘宅三亩之宅等院落格局进行了平面图形上的复原研究。在坊内用地政策、诸坊尺寸、日本古代四京坊内用地划分启示的基础上，本文认为坊内可能存在以50步为模数的用地分割方法，进而提出坊内用地划分的网格推测。最后通过对坊内建筑实例和典型里坊格局的分析，认为这种探索性推测具有一定的合理性。

It is difficult to Chinese ancient architectural research about the structure inside wards of Chang’an in (Sui) Tang Dynasty. And it is important to the architectural history about Chang’an of (Sui) Tang Dynasty and city planning of ancient Chinese Capitals. To analyze and discuss the structure inside wards of Chang’an in (Sui) Tang Dynasty deeply, this article is divided into four parts: the source and course of the wards, the road system inside the ward, division standard of the house inside the wards from the point of view of the land division law inside wards.First of all, the essence of holding people inside the wards, the method of organizing people and the pattern of the wards will be known overall by sorting out the source and course of the wards of Chang’an of (Sui) Tang Dynasty. The mature rule of the wards of Chang’an in (Sui) Tang Dynasty had the large influence on other cities in China and ancient Japanese capitals nearby. The influence is now very useful to analyze the structure inside wards of Chang’an in (Sui) Tang Dynasty.Though the lack of the archaeological information inside wards, it is possible to research it based on the history records. The several new points of view will be acquired relying on the analysis of the frame of streets, lanes and ’qu’ inside wards. The analysis begins from the road system inside wards through resetting the road information again.The improvement expectation on the land division law is possible. To discuss the division standard inside wards, the archaeological information and laws inside wards from Japanese ancient four capitals horizontally and the land information before (Sui) Tang Dynasty vertically are all compared each other, combined with the picture information. Then two division standards inside wards are acquired: one is based on rank for officials, another is based on unit ‘acre’ for ordinary citizen. Furthermore, summarizing the house of princes, dukes, officials and ordinary citizen, researching the examples such as the Dunhuang murals and unearthed pottery house, realizing the function and relationship of house base, Hanyu house in Jing’an ward and Kouyong house in Yongping ward is restored in the plane pattern.According to the analysis, the mode ‘50-step’ perhaps exists in the division method of wards, and the mesh is inferred in the division method. The analysis of the house example inside wards and typical ward prove the exploration is reasonable.