Abstract: China’s urban development is currently focused on internal upgrading and renewal, and neighborhood regeneration project is regarded as the core task of urban renewal to meet the pursuit of high-quality urban construction. However, the main difficulty in this regeneration process lies in the pre-decision stage, where stakeholders often find it difficult to agree on the regeneration program. Unlike conventional new projects, the decision-making process for older neighborhoods involves a wider range of interest groups, including residents, whose differences in size, structure and objectives complicate the decision-making process. Currently, theories and methods of pre-decision making for new construction projects are not applicable to the specific needs of neighborhood regeneration projects, which creates a dilemma in the renovation process. This study aims to address this issue by analyzing the dilemmas faced by retrofitting older neighborhoods through the lens of large group decision-making and value synergy, and proposing strategies for improvement. The results of this research are expected to improve the efficiency and quality of neighborhood regeneration in the pre-decision-making stage, and help the smooth implementation of old neighborhood regeneration in China.