Abstract: In pursuit of the strategic goal of carbon neutrality, the issue of how to synergize national park development with climate change mitigation has become a critical topic in current ecological civilization construction. The release of the prosperity effect of carbon sink ecological products in national parks is not only a key pathway for expanding the pathway for realizing the "Two Mountains" theory, but also an inevitable requirement for achieving ecological beauty and public prosperity. However, existing challenges such as non-uniform accounting systems, unclear property rights, and insufficient community participation hinder the full potential of these products in promoting sustained income growth for forestry farmers. This study scientifically defines the theoretical connotation of the prosperity effect of carbon sink ecological products and categorizes them into regulatory service-based carbon sink ecological products rooted in carbon sequestration functions, and material supply-based carbon sink ecological products based on carbon storage functions. It systematically explores the multiple dimensions of the prosperity effect of these two types of carbon sink ecological products and identifies the practical dilemmas constraining their realization in national parks. These obstacles include a lack of market trust due to inconsistent ecological product value accounting, restricted fair distribution of benefits caused by unclear property rights, and market entry barriers resulting from inadequate community participation. These issues not only limit the realization of the economic value of carbon sink ecological products but also marginalize ecological protection stakeholders, especially forestry farmers, in the process of value distribution, affecting the sustainability and fairness of national park institutional construction. On this basis, the study systematically constructs a mechanism comprising four major components-value accounting, property rights clarification, organizational operation, and benefit distribution-to achieve the prosperity effect of carbon sink ecological products. Among them, the value accounting mechanism is the premise, the clear property rights mechanism is the core, the organizational operation mechanism is the carrier, and the benefit distribution mechanism is the ultimate goal. The former provides the foundation and input for the latter, which are extensions and outputs of the former, collectively forming a closed loop from "value creation" to "value distribution", maximizing the orderly realization of forestry farmers′ property income rights. The study indicates that realizing the prosperity effect of carbon sink ecological products is not merely a simple process of resource commercialization, but involves a complex socio-economic process with diverse elements. It emphasizes the core role of rights protection, particularly the protection of small farmers′ rights, in achieving equitable and mutually beneficial outcomes. The findings provide decision-making references for promoting the unification of national park ecological protection, green development, and livelihood improvement.