With the consecutive increase in grain production and continuous increase in grain stocks and fiscal pressure，it is difficult to reverse market downturn in the short term. This harsh situation requires an adjustment on the current agricultural support policies so as to reduce grain stocks and costs，to balance the supply and demand sides，and ultimately to increase efficiency in agricultural production. Specific policy suggestions are：（1）to promote the marketization of agricultural products price，so as to dynamically balance the agricultural prices and quantities；（2）to reinforce the leverage effect of agricultural support policies，so as to optimize decision-making behaviors through risk-sharing mechanisms；（3）to divide grain stocks into strategic grain reserves and commercial grain reserves，so as to ensure food security through strategic grain reserves；（4）to re-focus on the objective of increasing efficiency in agricultural production.