This paper uses the econometric model and the data of 1991--2011 to make an empirical study on the determinants of China's grain export. The result shows that grain trade policy has a significant effect on China's grain export. The grain export policy which was adopted by China in 1995--1996 has a negative and significant effect on China' s grain export. The grain export restraint policy which was adopted by China after 2008 has also a negative and significant effect on China's grain export. Both foreign currency rate and grain output have ...