Reducing or remitting agricultural taxes and giving farmers agricultural subsidies are the important turning points of China’s agricultural policy.This paper uses farmers’ income,grain output and per capita arable land as the main objectives of agricultural subsidies,and agricultural subsidy policy as the virtual variables and evaluates the effect of policy implementation on agricultural subsidies through gray relational analysis.The result shows that the correlation is the weakest among all factors about agricultural subsidies relating to farmers’ income,grain output and per capita arable land,which indicates the gradual weakening tendency of agricultural subsidies.This paper finally puts forward optimization measures on adjusting names and standards of agricultural subsidies,attaching importance to subsidies of agricultural insurance and adjusting the structure of agricultural subsidies.