Citrus is a traditional fruit in Xiangxi Tujia and Miao Autonomous Prefecture (hereafter referred to as Xiangxi). Citrus industry has developed into a pillar industry in Xiangxi that will help adjust industrial structure and increase farmers' income. Its output directly affects farmers' income. The objective of the paper was to contribute to sustainable and sound development of citrus industry. It proposed an influence factor model of citrus output based on the Cobb-Douglas production function. Stratified sampling technique was employed in order to obtain data related to citrus cultivation in ...