The gap between urban and rural incomes in Guangxi is increasing year by year in a rising tendency, which resulted in agricultural development impact cannot be ignored. Such impact on agricultural development was analyzed from three aspects: agricultural development fund, farmland and food problems and labor force flow. The following problems were found: capitals flew to non-agricultural industry, which resulted in deficiency of agricultural development fund; farmland reduced and the problem of food supply is highlighted; labor force in rural areas emigrated, the price of agricultural products rose up. Related policies were offered: to strengthen the financial support; to speed up utilization of abundant labor force; to motivate farmers’ enthusiasm in food production; to increase investment in farmers’ endowment insurance and retirement pension in rural areas.