1, choose easily digestible liquid diet such as vegetable soup, thin porridge, egg soup, egg custard, milk, etc. 2, the diet should be light and less greasy, not only to meet the nutritional needs, but also to enhance appetite. Can supply white rice porridge, millet porridge, small bean porridge, with sweet pickled vegetables, dashi, squash or tofu milk and other small dishes, to light, refreshing. 3, to ensure the supply of water, can drink more acidic juice such as hawthorn juice, kiwi juice, jujube juice, fresh orange juice, watermelon juice, etc. to promote gastric juice secretion, to enhance appetite. 4, eat more food containing vitamin C, E and red, such as tomatoes, apples, grapes, dates, strawberries, beets, oranges, watermelon and milk, eggs, etc. Prevent the occurrence of colds. 5, diet should be a small number of meals. If the appetite is better after the fever is gone, it can be changed to semi-liquid diet, such as noodle soup, clear chicken soup, dragon’s beard noodles, small wontons, vegetable porridge, meat loaf porridge, liver porridge, egg flower porridge.