1, reasonable diet. Diet is appropriate to use some light and refreshing food with less oil or no oil or some acidic food, which can play an appetizing role. Avoid eating spicy, fried, greasy, pickled, smoked food. 2, food should be as diverse as possible. Eat more high-protein, multivitamin, low animal fat, easy to digest food, and fresh fruits and vegetables, do not eat stale or irritating things, do not eat carbonated beverages and other gas-producing food, less smoked, baked, pickled, fried, too salty food, staple food coarse and fine grains with to ensure nutritional balance, to prevent bloating, diarrhea and constipation. 3, advocate a small number of times to drink water, appropriate tea. 4, 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, eels, chicken, bone, dates, cinnamon, gum, etc.; at the same time can be combined with medicinal meals, such as party ginseng, astragalus, angelica, red dates, flowers, etc. 5, eat less and more meals, avoid overfull. In addition to the three meals can increase the volume of some small calorie high nutrient-rich food, such as chocolate, egg products. Eat more vegetables and fruits rich in vitamin C and vitamin A, such as tomatoes, hawthorn, oranges, etc. 6, improve immune function, can eat mushrooms, mushrooms, monkey head mushrooms, wood ear and other foods. 7.Increase appetite and prevent 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 add some ginger to stop vomiting; can also be used to appetite and strengthen the spleen, such as hawthorn diced meat, astragalus, yam, radish, white lentils, mushrooms, Chen Pi, etc. 8, such as a decline in immune function, leukopenia, gastrointestinal mucosal ulcers, hair loss and other symptoms. It is appropriate to supplement high protein foods, such as milk, lean meat, fish, animal liver, red dates, adzuki beans, etc. River crabs, eels, black fish, beef, etc. also help to raise white blood cells. 9. Overcome fear: insist on eating even with nausea and vomiting.