Abstract: Since the establishment of the first batch of national parks in 2021, the basic framework of a diversified funding guarantee mechanism with financial investment as the mainstay has been gradually established. Based on summarizing the experiences in building the funding guarantee mechanism for national parks, this study identifies the current issues within the funding mechanism, including imperfections in the budget management system, a lack of coordination and integration of cross-provincial and cross-departmental funds, and room for improvement in the management level of fiscal expenditures. Furthermore, the study proposes suggestions for improving the financial investment system and mechanism, including formulating medium- and long-term plans for financial funds, refining the division of financial responsibilities between the central and local governments, establishing a fiscal system that matches the administrative system, clarifying the coordination mechanism for cross-provincial national park funds, determining key areas of fiscal expenditure, and ensuring comprehensive fund planning and policy provision under the top-down design of "planning-project-funding".