The latest agricultural situation dispatch by the Ministry of Agriculture and Rural Affairs shows that the spring sown grain area in China has reached 120 million acres. At present, various regions are seizing the critical period of spring plowing production, accelerating the promotion of spring sowing and spring management, and laying a solid foundation for the annual high yield. Food security is the 'greatest of the country'. China is a large country with a large population, and solving the problem of eating well has always been the top priority in governing the country. Practicing the new concept of food security and ensuring food security is of great responsibility and sacred mission. Food security is an important foundation for economic security. From the perspective of economic wealth, food is the top priority for the people, grain is their destiny, and food is their life. Food is the most real and important wealth. From the perspective of substitutability of economic products, the substitutability of grain products is relatively low. The improvement of grain production efficiency is the foundation for the improvement of production efficiency in all industries. With the improvement of grain production efficiency, the supply of grain will inevitably be abundant, and the prices of agricultural products will inevitably be low. This will greatly reduce the labor and living costs and raw material input costs of other industries. From the perspective of stabilizing the economy, stable supply and prices of agricultural products also contribute to the stability of the entire national economic system and price system. Food security is an important foundation for political security. In terms of food issues, we cannot only calculate economic accounts, but also political accounts. The issue of food is the most important livelihood issue, and it is a fundamental issue that affects the people's hearts and minds. This is inevitably the first political issue to be considered. Food security is an important foundation for cultural security. Culture is the brand of a nation and the soul of a country, and national security cannot be achieved without cultural security. Agricultural culture is an important component of Chinese culture and a valuable asset of China's agriculture. And food culture is an important component of agricultural culture. China's grain culture has a long and profound history, which is not only a treasure of Chinese culture but also a treasure of world culture. It not only includes grain related technology, but also contains unique philosophical and aesthetic ideas. From the production of grain to the consumption of grain, it embodies the diligence and wisdom of the working people in China, highlighting the spiritual pursuit and value orientation of the Chinese nation. Currently, facing the unprecedented changes in the world and the combined impact of various uncertain factors, China's grain supply and demand are still in a tight balance. The issue of ensuring food security cannot be relaxed at any time, and it must be constantly pursued and firmly grasped. To ensure food security, it is necessary to ensure the safety of arable land. There are more people and less land in our country, and arable land is a scarce resource of agricultural production factors that need to be protected