The issue concerning increase of farmers' income is always a hot spot from central to local areas. Scholars of economics, sociology, and history have made extensive theoretical and empirical studies on this and relevant achievements are abundant. This paper firstly summarized relevant literature achievements of domestic and foreign scholars. From various agricultural supporting and benefiting policies of central and local government in recent years, it found out major factors restricting growth of farmers' income. From economic development rules, combining theories of regional comparative advantages, agricultural development and regional economic development, it is expected to solve problems in increase of farmers' income, and realize scientific policies and management, accurate strategies, advanced and feasible decisions. Finally. it came up with pertinent recommendations for increasing farmers' income.