According to food science research, vacuum preservation can effectively extend the shelf life of food. Linyi mutton soup is a unique soup, in which the mutton and seasoning need to be properly preserved to maintain its taste and flavor. Vacuum storage can prevent oxygen from entering food and slow down oxidation reaction, thus prolonging the shelf life of food. In addition, vacuum packaging can also prevent the growth of bacteria and other microorganisms and reduce the risk of food spoilage. Therefore, vacuum preservation of Linyi mutton soup can ensure its freshness and deliciousness.