Chemotherapy is an important treatment for cancer, but chemotherapy has side effects. After chemotherapy, digestive symptoms such as loss of appetite and diarrhea; bone marrow suppression such as drop in white blood cells and platelets can occur. The diet of chemotherapy patients is the main concern of patients’ families. The absence of appetite directly affects the effectiveness of treatment. Diet adjustment for chemotherapy patients is very important. The diet of chemotherapy patients before chemotherapy should be more high-protein food, choose food that can benefit the qi and blood, strengthen the spleen and kidney, such as red dates, yam, sesame, longan, spinach, chicken, duck, pork, beef, fish, soy products, eggs, milk, etc.. In addition, available astragalus, ginseng, angelica, berry, etc. boiled or stewed chicken, duck, etc. The level of nutrition has a direct impact on the effect of chemotherapy. It is still necessary to increase the body mass and nutrition before chemotherapy. Diet of chemotherapy patients during chemotherapy, there will be a loss of appetite, nausea, vomiting, diarrhea and other symptoms. The main food should be nutritious, but also easy to digest food, the main food to flow juice or semi-fluid juice, for example, grains porridge, noodles and so on. The diet of chemotherapy patients in the post-chemotherapy human physique becomes poor, to eat more fresh food with high nutrition, patients can choose to eat according to their taste. Such as: onion, eggplant, radish, celery. Tofu, wild rice; mushrooms including shiitake, mushrooms, monkey mushrooms, fungus, etc.; seafood, jellyfish, kelp, sea cucumber, nori, scallops, turtle, etc. In general, the diet of chemotherapy patients can be divided into: 1, high protein calorie diet: should be mainly high-quality protein, such as eggs, milk,, pork, soybean products, but also supplemented with some high-calorie fruits. 2.Diet to restore hematopoietic function and improve immunity: foods containing high molecular polysaccharides can increase the number of white blood cells of patients to improve the vitality of human immune cells and the physiological function of cancer cells until phagocytosis, killing, lysis and rupture. Such foods include shiitake mushroom, winter mushroom, silver fungus, black fungus, reishi, and dance mushroom (ashwagandha). Chinese medicine diet to raise white blood cells includes turtle soup, coix seed congee, astragalus congee, etc. Eat more “flesh and blood sentient products”, such as chicken, duck, fish, meat, etc., which should be cooked by boiling, stewing, steaming, etc. You can also choose foods containing more iron, such as animal liver, loin, heart, lean, egg yolk; vegetables such as spinach, celery, tomatoes; fruits can be given to apricots, peaches, plums, raisins, dates, pineapples, prunes, oranges, oranges, grapefruit and figs. You can also use stewed oyster chicken, peanut coat for blood. 3.Vitamin-rich food: vitamin is an essential nutrient to fight against cancer, vitamin A can prevent epithelial relatively low transformation and repair epithelial relatively low operation, which can help prevent various tumors; lack of B vitamins can accelerate the formation and growth of tumors Vitamin C can block the synthesis of nitrosamines in the body and reduce the incidence of tumors. Eat more fresh vegetables and fruits rich in vitamins, such as Ulva, rape, spinach, hawthorn, fresh dates, kiwi, etc. 4.Vitamin-rich food: vitamin is an essential nutrient to fight against cancer, vitamin A can prevent epithelial relatively low transformation and repair epithelial relatively low operation, which can help prevent various tumors; the lack of B vitamins can accelerate the formation and growth of tumors Vitamin C can block the synthesis of nitrosamines in the body and reduce the incidence of tumors. Eat more fresh vegetables and fruits rich in vitamins, such as Ulva, rape, spinach, hawthorn, fresh dates, kiwi, etc. 5.Food containing trace elements: selenium is a strong oxidant, and can also resist mutation, anti-cell proliferation, promote natural inactivation of carcinogenic substances and increase immunity. Foods with high selenium content include garlic, pork kidney, chicken liver, shrimp and fish, mushroom, asparagus, cabbage, etc. The diet of chemotherapy patients will be much better as long as they pay attention to the above mentioned, but it can reduce the side effects produced by chemotherapy or with the treatment of traditional Chinese medicine, the dietary attention to these can only reduce some of these side effects, with the treatment of traditional Chinese medicine, can effectively reduce the side effects.