Abstract: The treatment of rural black and odorous water bodies is a crucial component of the broader effort to ensure clean water resources. In recent years, financial support from special funds at various levels has shown an upward trend, fully demonstrating the importance of improving the rural ecological environment and accomplishing the task of treating rural black and odorous water bodies. However, in traditional performance evaluations of special project funds, issues such as a disconnect between fund allocation and actual treatment needs, low budget execution rates, and suboptimal treatment outcomes have been observed in some regions. The existing performance evaluation system also shows room for improvement, including insufficient integration with project management and a lack of tailored design.Driven by both policy evolution and practical needs, this paper adopts a combined weighting strategy, including the Delphi Method and the Scaled Method, to establish evaluation indicators across dimensions such as public engagement, fiscal fund utilization, project management, and sustainability. A performance evaluation system covering 31 specific indicators across criterion and tertiary levels is constructed. By optimizing the quantitative characteristics of the indicators and enhancing personalized design, this study aims to improve the scientific rigor and operability of performance evaluation, refine the fund performance evaluation system for rural black and odorous water body treatment projects, enhance the efficiency of fiscal fund utilization, and optimize ecological environment governance policies. Additionally, it provides a reference for constructing fund performance evaluation systems in similar ecological and environmental fields.