(1) Background--Under the background of rural revitalization strategy, the research on credit rationing of forest rights mortgage loans of the farmers in collective forest areas is not only the internal requirement of promoting the rural revitalization strategy, but also the basic need of realizing the increase of the farmers' forestry management income in collective forest areas. (2) Methods--The research data came from a questionnaire survey of 420 rural households in Sanyuan District, Jiangle County, Jianning County and Taining County, Sanming City, Fujian Province, in August 2021. Using DEM and descriptive statistics, this paper interpreted the types and generation mechanism of credit rationing of the farmers' forest rights mortgage loans, and then identified and measured the credit rationing. (3) Results--First, from the perspective of credit rationing of the farmers' forest rights mortgage loans, the proportion of lack of credit demand for forest rights mortgage loans in collective forest areas in Fujian Province under the background of rural revitalization is relatively high, which is 50. 82%. Second, the farmers facing demand-type credit rationing of forest rights mortgage loans account for 85. 11% of the total credit rationing, while the farmers facing supply-type credit rationing of forest rights mortgage loans account for only 14. 89% of the total credit rationing. The farmers in collective forest areas are faced with more severe credit rationing of forest rights mortgage loans. Third, demand-type credit rationing of forest rights mortgage loans mainly includes self-imposed credit rationing, transaction cost credit rationing and risk credit rationing. Fourth, most of the farmers who apply for forest rights mortgage loans from financial institutions can get corresponding loans, but the farmers in collective forest areas can get less amount of forest rights mortgage loans because of the small mortgage area of "Certificate of Forest Rights". (4) Conclusions and Discussions--First, the farmers generate self-imposed credit rationing because of the cognitive deviation of forest rights mortgage policies, form risk credit rationing because of the endowment effect of the forestlands, and face new transaction cost credit rationing because of high transaction costs. Second, the family management with pure forestry of the small farmers in collective forest areas is still the main type of forestry management in China. However, the degree of part-time employment of the forest farmers in collective forest areas is constantly increasing, there is a phenomenon of forestry management and non-forest employment, and the income comes more from non-forest employment. Third, the proportion of lack of credit demand for forest rights mortgage loans in collective forest areas in Fujian Province under the background of rural revitalization is relatively high. Most of the farmers who have the credit demand for forest rights mortgage loans are still facing more severe demand-type credit rationing. Fourth, the supply-type credit rationing of forest rights mortgage loans faced by the farmers is relatively low. Therefore, in order to fully realize the policy effect of forest rights mortgage loans from the perspective of rural revitalization, the following policy suggestions are put forward: First, improve the farmers' financial literacy through multiple channels. Second, achieve multi-department data integration and credit information co-construction and sharing. Third, strengthen the institutional innovation, alleviate the demand-type credit rationing of forest rights mortgage loans of the farmers in collective forest areas to the maximum extent. [ABSTRACT FROM AUTHOR]