随着我国乡村振兴战略的持续推进，乡村物质生活水平得到了明显的改善和提升，村民对于文化和社交生活的需求逐渐增加，而公共建筑作为承载这些活动的重要场所，愈发受到乡镇政府、建筑师和乡村村民的重视。然而，在乡村建设的过程中，由于各主体不同程度的缺失，导致了公共建筑的诸多问题。本研究选取我国经济相对发达、乡村建设较为领先的长三角地区的公共建筑作为研究对象，在当代独特的时代背景下，梳理我国当代村落公共建筑的起源与发展，发现目前长三角地区当代村落公共建筑存在同质化严重、在地性不足、主体错位和失语、建筑使用率低、建筑师失位等问题。本研究引入适宜性理论，通过对其理论发展和建筑实践的分析，对建筑适宜性进行再诠释，剖析其内涵和特征，并与当代村落相结合，发掘其理论价值及影响因素，作为研究的理论基础。进而，在问题与理论的基础上，本研究从策划定位、建筑设计、施工建造、运营维护四个方面构建了长三角地区当代村落公共建筑适宜性设计策略。进一步地，本研究进行实地调研，选取调研中具有代表性的建筑实践，详细分析建筑的功能定位、建筑设计和运营维护等，探讨其在适宜性视角下的特点和问题，对所提出的设计策略进行补充和验证。本研究的侧重点有以下三个方面：一是对建筑适宜性理论进行梳理和再定义，尤其是针对长三角地区当代村落，形成有针对性的理论体系；二是形成设计策略和体系，希望能够为未来的乡村建设和公共建筑创作起到积极的推动作用；三是结合大量建成建筑案例，尤其是经过实地调研的实践案例，以更加直观、具体的视角对策略进行优化，对其应用进行诠释。

With the continuous promotion of China‘s rural revitalization strategy, the material living standard of the countryside has been significantly improved and enhanced, and the villagers‘ demand for cultural and social life has gradually increased. As an important place to carry these activities, public buildings have received more and more attention from the township government, architects, and rural villagers. However, in the process of rural construction, the varying degrees of absence of these subjects has led to many problems in public buildings. This study selects public architecture in the Yangtze River Delta, a relatively economically developed region in China and a leader in village construction, as the object. In the context of the unique contemporary era, it sorts out the origin and development of contemporary village public architecture in China. Through field research, it finds that there are serious homogenization, insufficient localization, misalignment and dislocation of subjects, low building utilization, and absence of architects in contemporary village public architecture in the Yangtze River Delta at present. This study introduces the theory of appropriateness, reinterprets architectural appropriateness through the analysis of its theoretical development and architectural practice and combines it with contemporary villages with regard to its connotations and features, so as to discover its theoretical value and influencing factors as the theoretical basis for the study. Then, based on the problem and theory, this study constructs a design strategy for the appropriateness of public buildings in contemporary villages in the Yangtze River Delta region from four aspects: planning and positioning, architectural design, construction and operation and maintenance. Further, this study conducts field research, selects representative architectural practices from the research, analyzes in detail the functional positioning, architectural design and operation and maintenance of the buildings, explores their characteristics and problems under the perspective of appropriateness, and complements and verifies the proposed design strategies. The focus of this study is on the following three aspects. First, to sort out and redefine the theory of architectural appropriateness, especially for the contemporary villages in the Yangtze River Delta region, and to form a targeted theoretical system. Second, to form a design strategy and system that will hopefully play a positive role in promoting future rural construction and public architecture creation. Third, to combine a large number of completed architectural cases, especially practical cases that have been researched in the field, so as to optimized the strategies and interpret their applications in a more intuitive and concrete perspective.