In addition to applying the correct treatment plan and receiving the correct and reasonable various treatments, the correct and scientific diet for tumor patients is crucial for treatment and recovery. The general diet of tumor patients should be easy to digest, nutritious, especially rich in animal protein, food rich in vitamin E and fresh fruits with anti-cancer and anti-cancer effects. In addition, reduce the intake of fried foods. In addition, we should pay attention to the cooking method and reasonable combination of food to match the patient’s taste, so that the diet is fancy, nutritious and easy to digest. At the same time, the dietary requirements are very different for different kinds of tumors and concurrent complications of patients. Although the diet of tumor patients is not equal to the simple dietary taboo, some foods should be forbidden for tumor patients. For example, smoking and alcohol are prohibited; no pickled and moldy food, such as pickled vegetables, moldy food and salted fish; no smoked, baked and fried food, especially burnt and fried food. Avoid spicy and stimulating food, such as onion, garlic, leek, ginger, pepper, chili, cinnamon, etc. Avoid eating food that is not suitable for digestion and chewing hard. Avoid eating waxy, smoked meat, fried and}n food and various cold fruits. Or add Chinese herbs to the diet to treat the disease, increase nutrition, strengthen the body, so that the body can produce the ability to resist the disease and play an auxiliary role in fighting cancer. The diet should be soft, nutritious, easy to digest and absorb. After surgery, it is advisable to nourish blood and Qi, and use Astragalus membranaceus, Radix Codonopsis pilosulae, Huai Shan, lotus root, etc. During radiotherapy, there are often fluid depletion, dry mouth and tongue, so sugar cane, apple, banana, pineapple, etc. can be consumed. Or choose to drink pear juice, lotus root juice, watermelon juice, tomato juice, etc. to replenish fluids, and also eat more mung bean soup, winter melon soup, etc. In chemotherapy, it is advisable to take a large amount of qi and blood as the main supplement, choosing mushrooms, fungus, water fish, turtles, etc. On weekdays, it is advisable to eat more foods with collective immunity and cancer prevention, such as Poria, Huai Shan, mushrooms, shiitake mushrooms, jujube, coix seeds, string beans, walnuts, etc. Applicable characteristics of different diets: 1. Soft diet: Soft diet includes steamed buns, bread, buns and dumplings. Fish, chicken and other mashed meat, while vegetables should be chopped and cooked without spicy condiments such as chili and mustard. It is suitable for patients with weak digestive function after radiotherapy and chemotherapy; gastrointestinal tumor patients after surgery; patients with ulcers and edema and inflammation in the mouth. 2.Semi-liquid food: Semi-liquid food generally refers to liquid food with less food residue. In order to meet the nutritional and caloric needs of tumor patients, this kind of food needs to be eaten several times a day and a small amount each time. A small amount of meat is used, cooked and chopped as a principle, made into a puree and prepared as a liquid. It is suitable for patients with serious digestive disorders; patients with good general condition after tumor surgery; patients with difficulty in swallowing such as inflammation and ulcer in the mouth; tumor patients with high fever. 3.Fluid food indications: liquid food, no food residue, extremely easy to digest. Eat regularly every day and eat less and more. Because it is difficult to replenish the body with enough nutrition and heat energy, it can only be used for a short period of time. Because there are now artificially prepared enteral nutrition solutions, they have been less often prepared by themselves. It is suitable for patients with difficulty in swallowing; esophageal cancer patients with middle or late esophageal obstruction; thoracic and abdominal tumor patients with initial diet after surgery; advanced tumor patients with extreme physical exhaustion. 4.Applications of general diet: The general diet is relatively easy to digest and rich in nutrition for tumor patients, without using spicy and stimulating condiments. It is suitable for patients without acute clinical symptoms such as bleeding and fever; various tumor patients without digestive tract dysfunction.