This study proposes a research structure. The standards of ISO/CNS 14064-1 and the guides compiled by Environmental Protection Administration (EPA) are used to investigate the guiding principles and required procedures of organizational GHG inventory for a leisure farm. Next, the GHG emissions of the leisure farm are inventoried and the results are analyzed. Finally, the baseline of GHG emissions of the leisure farm can be established. The findings can be used as the reference of GHG reduction in the future. A real leisure farm is used to expound the research structure proposed in this study and the year of GHG inventory is 2013. Based on the results of the study, the totalGHG emission of the leisure farm is 1915.55 tons CO2e/year and the emission strength of the leisure farm is 33.61 tons CO2e/(one ton of oranges) in 2013. Comparing the emissions of major GHG emitters, the emission of “organic ammoniates” is 1860 tons CO2e/year and the percentage is 97.1%. Therefore, organic ammoniates will be the major GHG reduction directions for the leisure farm.