Chemotherapy of lung cancer can cause oral mucositis, which manifests as mucosal congestion, edema, ulceration, pain and so on. At this time, it is necessary to keep the mouth clean, brush the teeth after eating, and supplement high nutritional fluid or office fluid diet, such as lotus seed soup, snow ear soup, milk, soybean milk, crucian carp soup, etc. When eating, avoid too hot, too acidic and stimulating diet. Eating to avoid excessive heat, too acid and stimulating diet, acute inflammation can be oral ice fast in order to reduce inflammatory exudation, the emergence of ulcers can be used to add honey 20 ml of crushed vitamin C0, 1 gram, oral, 2 ~ 4 times a day. Chemotherapy damage to the gastrointestinal mucosa, nausea, vomiting, epigastric pain, nausea and so on. At this time, you can eat appetizing food, such as hawthorn, lentils, yam, white radish, mushrooms, etc., and at the same time, you should eat small meals to avoid satiety. Eating should be chewed and swallowed slowly, don’t lie down for 1 hour after meal, you can spread, don’t take water 1 hour before chemotherapy, if nausea and vomiting when eating, you can take 3~5 ml of fresh ginger juice orally. Lung cancer patients need how to have dietary regimen during chemotherapy, lung cancer is very sensitive to chemotherapy, and chemotherapy is a common treatment for lung cancer. Sufficient nutritional supplement is needed during chemotherapy, which is helpful for the body to improve immunity, enhance resistance and reduce the adverse effects of chemotherapy. Then what do you need to pay attention to the diet during chemotherapy for lung cancer? Lung cancer patients need to pay attention to dietary regimen during chemotherapy. Chemotherapy for lung cancer can cause poor regeneration of bone marrow, especially the decline of white blood cells is the most obvious. In order to effectively prevent the decline of blood image, patients should supplement high protein diet during chemotherapy, such as milk, soybean, lean meat, pig’s trotters, sea cucumber, fish, animal liver and red dates, peanuts, walnuts, black fungus, carrots, red kidney beans and so on. River crabs, black fish, beef, animal boiled peptones such as donkey skin peptones (Colla Corii Asini), pig skin peptones (meat peptones), etc. also help to enhance white blood cells. Chinese medicine emphasizes the importance of replenishing the organs with the organs, so during chemotherapy you can also add animal bone marrow in moderation, such as stewed bone marrow from cows, samples, and pigs, or diets made with chicken, duck, goose, and pig’s blood. At the same time, you can also eat more five black food, such as black sesame, black rice, black beans, black dates and so on. According to Chinese medicine, “black can enter into kidney”, and five black foods can replenish kidney and fill in marrow, which can help to improve blood quality. During chemotherapy for lung cancer, diet should be light and delicious, easy to digest, and provide high-calorie, high-protein and vitamin-rich food. Dietary structure should be adjusted according to patients’ dietary preferences and needs of illness. Spicy and indigestible food should be prohibited to avoid damaging the mucous membrane of digestive tract.