Based on provincial panel data during 2000-2010, this paper describes the response of China's agricultural public expenditures to different exogenous shocks by using instrumental variables estimation. The results find that:(1) real per capita GDP has a strong positive effect on agricultural public expenditures.(2) The real per capita GDP by using weighted growth rate of temperature and rainfall as an instrumental variable has a significant positive effect on China's agricultural public expenditures,but this effect is transitory.(3) Using urban per capita GDP growth rate as an instrumental vari...