1, pay attention to balanced nutrition, staple food coarse and fine grains, food diversification, more high-protein, low-fat, multivitamin, easy to digest food, and fresh fruits and vegetables, do not eat stale or irritating food, do not eat carbonated beverages and other gas-producing food, less smoked, baked, pickled, fried, too salty food, to prevent bloating, diarrhea and constipation. 2, to increase appetite, prevention and vomiting, can be taken to change the recipe, change the cooking method, increase the color, aroma and taste of food; a small number of meals, eat some light and refreshing raw cold dishes; in the diet can be added some ginger to stop vomiting; can also be used to appease the stomach and spleen, such as hawthorn diced meat, astragalus, yam, radish, Chen Pi, etc. 3, in order to prevent chemotherapy-induced decline in white blood cells, platelets, etc., it is appropriate to eat more blood and meat, such as animal offal, egg yolk, lean meat, fish, eel, chicken, bone, etc.; at the same time can be combined with medicinal dishes, such as party ginseng, astragalus, angelica, red dates, peanuts, etc. 4, improve immune function, can eat mushrooms, mushrooms, monkey head mushrooms, wood ear and other foods.