It often happens in the ward of Sanbo Brain Hospital of Capital Medical University that a large group of family members of tumor patients surround the doctor and ask whether they should eat this or not, so what exactly can tumor patients eat? Can they eat sea cucumber, shark’s fin, bird’s nest and other tonic things? Can they eat spicy food? Sichuan people do not like spicy food, but can they eat and drink freely during their illness? Experts from Sanbo Brain Hospital of Capital Medical University will talk about this topic of eating for tumor patients today. The “hairy food avoidance”. At present, there is no effective means to cure malignant tumors, and some patients are suffering from recurrence and metastasis soon after surgery and radiotherapy. Some patients and their families think that the reason for recurrence and metastasis is carelessness in diet or laxity in “taboo”. In some places, it is said that chicken cannot be eaten, fish, shrimp and seafood are “hairy”, and scaleless fish cannot be eaten. In many ancient prescriptions, according to the different drugs also recorded a lot of corresponding “taboos”, some of them are quite strict. However, in the clinical work, we did not encounter any definite cases of recurrence or deterioration due to the laxity of “taboo”. Some early stage patients with good results of radical surgery did not have recurrence or metastasis even without dietary “taboos”. This shows that there is no scientific basis for blaming recurrence and metastasis entirely on the laxity of “avoidance of food”. Further scientific research is needed on the issue of “avoidance of food”. In this regard, appropriate “avoidance of food” is still necessary, but we should oppose the behavior of over-emphasizing “avoidance of food”. The “taboo” for tumor patients should not be too strict, and the recipes should not be too narrow. Some people make a fuss about it, so that the patients are at a loss, which makes their nutritional status deteriorate day by day, which is very harmful. The diet of tumor patients should not only focus on its content, but also consider their hobbies and eating environment. Eating their favorite food can increase the secretion of gastric juice, which can promote appetite and improve the absorption and utilization of food. In addition, the eating environment can also affect the patient’s appetite, so a pleasant eating environment should be created for the patient. The diet of tumor patients includes common rice, soft rice, semi-liquid food and liquid food, which should be given according to patients’ specific condition and digestion and absorption ability. For example, some patients after neck surgery are prone to choking and coughing when eating, so they dare not eat, so they should be given soft rice or soft and dry semi-liquid food. Patients with neck radiation therapy have less saliva, dry and painful throat and difficulty in swallowing, so diet should be more watery and cooler. Due to the different treatments received by tumor patients, the appropriate diet should also be given according to the specific treatment method. For example, patients receiving radiotherapy and chemotherapy often have abnormal taste and anorexia, and everything they eat becomes bitter or tastes wrong. The treatment methods are: eat more high protein, high nutrition food and fresh fruits and vegetables; add condiments in food; make more food with good color, aroma and shape to arouse appetite; drink a small cup of acidic beverage before meal can play an appetizing role; give patients appropriate amount of zinc and vitamin B complex, which can also improve the sense of taste and increase appetite. The treatment methods of malignant tumor are mainly based on surgery, radiotherapy, chemotherapy and with drug treatment. Patients who receive different ways of treatment should also make certain dietary adjustments accordingly. After surgery, patients should eat more high-protein products, such as lean meat, fish, eggs, milk, soy milk, tofu, soy products, etc., to facilitate the growth and recovery of wounds. Chemotherapy patients should have a light, easily digestible and nutritious diet, and can eat less and more meals. Patients are also mostly accompanied by bone marrow suppression and low blood picture, they should eat more red dates, peanuts, wolfberries, spinach, liver, or stewed cavity bone, ribs, stick bone soup with astragalus and angelica, etc., which is beneficial to enhance white blood cells and hematocrit. Radiotherapy patients should eat more heat-clearing and yin-supporting and detoxifying products to reduce radiotherapy reactions due to heat toxicity damage. For example, patients with oral cancer, nasopharyngeal cancer and esophageal cancer have obvious symptoms of dry throat, sore throat and difficulty in swallowing during radiotherapy, so they should eat more fresh vegetables, lily of the valley, silver fungus, pear, apple and watermelon, etc. and drink chrysanthemum, honeysuckle, fat sea, maitake, American ginseng and raw licorice in water as tea to help reduce symptoms. Rinse your mouth with warm salt water in the morning and evening.