Saving food, strictly prohibiting waste and reintroducing food security means that this is a national level thinking. Of course, the mode of production has greatly improved, the people live in material abundance, but the country still needs to import a large amount of food every year. Combined with the current society has a lot of waste of food phenomenon, so the proposal to save food is very necessary, one is related to national security, and the other is to promote the virtue of saving ethos.