China is a large agricultural and the most populous country,so it is a crucial importance for the food security. The basic situation of food in our country is self-sufficiency,a certain amount of imports and reserves. The output of grain in our country has increased annually,however,as a result of policy adjustments and other factors like environmental pollution,together with a large population base and the trend of excessively populous growth,the growth of grain output is relatively slow,which will be harmful for our grain security as well as the healthy development of the national economy. In this case,several solutions could be tried,such as improving the level of science and technology,adjusting industrial policies and controlling environmental pollution. Besides,we ought to strongly advocate thrifty behavior to increase income and reduce expenditure. The basic situation of food in our country is self-sufficiency, a certain amount of imports and reserves. The output of grain in our country has increased annually, however, as a result of policy adjustment and other factors like environmental pollution, together with a large population base and the trend of excessively populous growth, the growth of grain output is relatively slow, which will be harm for our grain security as well as the healthy development of the national economy. In this case, several solutions could be tried, such as improving the level of science and technology, adjusting industrial policies and controlling environmental pollution. Moreover, we ought to strongly advocate thrifty behavior to increase income and reduce expenditure.