Abstract：
Based on the monthly data from 2004 to 2015, the paper uses the regression analysis to discuss the influence factors of wheat, rice, corn and soybean, the four grain crops. The result shows that international grain price demonstrates a positive correlation with the price of rice and soybean in China. International crude oil price shows a positive correlation with Chinses rice and corn, whereas a negative correlation with Chinese soybean. Grain cost displays a remarkable positive correlation with the price of Chinese wheat, rice and corn. Generalized money supply demonstrates a positive correlation with the price of Chinese wheat, rice and corn. Increasing grain self-sufficiency ratio and the intensity of subsidies, and making scientific macroscopical policy have great theoretical and practical significance of the stability and development of grain industry.
2016 
