1. Project Background and Main Content This project belongs to the field of 'Rural Economic Management' and is funded by the major topic 'Research on the Circulation Model of Rural Collective Construction Land in Shanghai (Number: GTZ2009004)' from the Shanghai Municipal Bureau of Planning and Land and Resources Management in 2009. In 2010, Shanghai initiated a pilot program for the circulation of rural collective construction land. This project, combined with the background and needs of the pilot work, conducted systematic research on the design, selection, and improvement of the circulation model, exploring important issues such as property rights systems, distribution of circulation income, government regulation, and the choice of circulation models. The aim is to provide theoretical guidance and policy recommendations for the scientific and effective implementation of the circulation of rural collective construction land. The theoretical foundation of this project is solid and closely aligned with practice, with most of the research results applied in the pilot program for the circulation of collective construction land in Shanghai, achieving significant social and economic benefits. It has played an important role in protecting collective land property rights, ensuring farmers' income, optimizing transfer models, and improving the efficiency of pilot work. 2. Key Innovations and Applications The key innovation of this project is the 'Rural Collective Construction Land Transfer Model Selection Technology based on Maturity Models', which for the first time provides a set of scientific evaluation methods and decision-making basis for the selection of rural collective construction land transfer models. For the transfer subject - the village collective, whether it is appropriate to transfer and what kind of transfer model to choose should be based on a comprehensive consideration of various factors such as the collective's land resource endowment, industrial economic environment, land market environment, and collective members' willingness. These factors vary in characteristics among village collectives at different stages of development and in different development environments, leading to differences in the collective's ability and opportunities to transfer collective construction land, thus constituting different transfer model choices. However, in practice, there is a lack of effective tools for judging which transfer model is suitable for the local village. Moreover, there is little exploration in the theoretical community regarding the selection of land transfer models. This project introduces maturity theory and constructs a 'Rural Collective Construction Land Transfer Maturity Model'. Through this model, the collective's ability and opportunities to implement transfers are comprehensively measured and classified into different maturity levels. Different levels correspond to corresponding transfer models, facilitating the identification of transfer modes. At the same time, the 'Rural Collective Construction Land Transfer Maturity Model' also has diagnostic and improvement functions. It can identify the advantages and problems faced by the collective in implementing land transfer, thereby proposing improvement measures. The model is suitable for pre-transfer assessments of collectives planning to implement transfers and possesses strong applicability and scientific nature. The research team used this technology to assess five pilot villages in Shanghai that were planning to implement land transfer, providing accurate judgments for the selection of transfer models. The assessment results were unanimously recognized by the competent authorities and village collectives. This has strong practical value for Shanghai, which is currently at the stage of collective construction land transfer pilot projects, and it also has important reference significance for China's further exploration of the rational use of collective construction land. 3. Achievements and Benefits The paper-related achievement 'Research on the Selection of Collective Construction Land Transfer Models Based on Maturity Model' was presented at the Sixth China Real Estate Academic Symposium and received high praise from the experts present, winning the Second Prize for Excellent Papers. Of course, the model also has shortcomings such as complex evaluation methods. Simplifying the algorithm while ensuring effectiveness is an optimization direction to expand the application scope and practical value of the model. The research findings of this project are of great significance in the current situation where China urgently needs to further advance its urbanization strategy and economic structural transformation. This is particularly true for Shanghai, which faces a shortage of construction land for urban development and has not yet activated rural collective construction land. The project's results not only have important policy reference value for improving the management system of rural land and enhancing the government's ability to allocate land resources but also play an important role in achieving major goals such as coordinating urban and rural development, increasing farmers' income, protecting collective rights and interests, and activating land resources.