Grain security forms an important part of state security.Along with economic development,the direction of food transportation changed transporting cereals to north from south into south from north in China.Taking the point of view of per unit area yield of grain,per-capita share of grain and contribution degree of grain as breakthrough point,this paper researched the spatial differences of grain production.Through general characteristics of grain security shows overall balance with surpluses during good years,the sustainable development of grain production faces many problems.Therefore,on the basis of making per unit area yield leap,the promotion of grain total output should be realized.Based on join and balance between production areas and marketing areas,and the coordination and coordination of grain in short supply,the perfection of grain reserves and construction of forewarning system are the significant strategy moves of grain security in China.