Using the gray system theory and gray relational analysis method, the relationship between added value of hybrid corn, hogs, Juglans siglillata, Pisum Sativum L., safflower and that of farmers' net income in Bailongjing Village, Wafang Township, Longyang District, Baoshan city, Yunnan Province was analyzed and the ways to increase farmers' per capita net income were studied. The results showed that economic income of farmers by structure adjustment of agriculture is Juglans sigillata>Pisium Sativum L.>safflower>hogs>hybrid corn. The study can provide scientific basis for optimizing agricultural industrial structure in Baoshan City, and promoting the rapid growth of farmers' economic income.