Agriculture, rural areas and farmers have always been the focus of the Chinese Communist Party and the government at all levels. How to increase farmers’ income is playing the most important role in rural areas. Based on gray relevance theory, this paper analyzes the main factors influencing the farmers’ income,including income from plantation, income from grassland farming, income from fishery, income from property and income from wages and salaries. Finally, this paper puts forward some relevant policy suggestions on how to increase farmers’ income.