During chemotherapy, patients may experience blood cytopenia, oral mucosa irritation and other symptoms, and such adverse reactions can be effectively prevented through dietary modifications. Prevention of blood count drop: supplement high protein diet, such as milk, soybeans, lean meat, pig’s feet, sea cucumber, animal liver and red dates, peanuts, walnuts, black fungus, etc. Animal boiled gum peptones such as donkey skin gum (Agaricus blazei) and pig skin gum (Pork skin peptones) can also help to raise white blood cells. Reduce the symptoms of stomatitis: It is advisable to have a highly nutritious liquid or semi-liquid diet, such as lotus seed soup, milk, soy milk, carp soup, etc. Avoid overheating and stimulation when eating. When eating avoid overheating and stimulating diet, acute inflammation can contain ice, ulcers can be used 20 ml of honey with 0.1 grams of crushed vitamin C tablets orally, 2 to 4 times a day.