Abstract: As the readjustment of food structure of Chinese People is mainly to increase the amount of bean and meat within the food composition, to develop the agriculture becomes the most important material base. But the increasing of the amount of bean and meat within the food composition is restricted by the limited area of cultivated land and the great demand of cereals. Author suggests a new idea in order to change the traditional idea which is single one agricultural product alone being carried out in a certain district such as cereal district only produces cereals alone, animal husbandry district produces animals alon3, etc. Author's idea is that within a certain district farmers may produce the traditional product as the main business meanwhile they may also produce other agricultural products. For instance, in the cereals production district farmers may take the cereals as the main production, but they may produce animals, forest, fish or others, In the same way, within one district farmers may produce their most suitable agricultural product as their main business but they also can produce other agricultural products besides the main one. Author calls that the synthetic use of land resources to enlarge the amount of actual area of cultivated land to adapting the read a justment of food structure in China.