Chen Jiru, a writer in Ming Dynasty, said in Reading the Mirror: "Being drunk and full of fresh food will make people unconscious. If vegetables eat vegetable soup, their intestines and stomach will be clear and healthy. ..... Most mortals feast on sleep and nourish their diet. I don't know that sleeping more is the most harmful to my health. The Zen family takes sleep as the first of the six desires. Eating too much makes people dizzy, and suppressing yang can't rise. Good photographer, sleepless at night, often making a Qingming bow. If you eat less, your stomach will be empty, your spirit will flow around, and your illness will not be cured. This is also the key to health and can be told to comrades. " This paper discusses the benefits of light food from the point of view that light food can make people sober up and from the point of view of food's spiritual effect on people.