Clinical investigations have found that the chance of developing esophageal cancer is very high when certain foods are frequently consumed. It is generally believed that rough, hard, too hot, too fast diet, strong tea, strong wine, irritating foods such as chili, garlic, vinegar and smoking may be related to the occurrence of esophageal cancer; lack of animal protein, fat, fresh vegetables and fruits are also related to the occurrence of esophageal cancer; insufficient intake of vitamin A, vitamin C, vitamin E, riboflavin and niacin may also induce esophageal cancer. Some regions like to eat moldy food for a long time, such as sauerkraut, dried radish, dried potatoes, corn flour, moldy peanuts, etc. These moldy foods contain a lot of fungi, which can be converted into carcinogens nitrosamines. Clinical research has found that people who like to eat this kind of food have a very high chance of developing esophageal cancer. In addition, there are also data studies showing that the content of molybdenum, selenium, zinc, magnesium, cobalt, manganese and other trace elements in the water and soil of esophageal cancer-prone areas is low. The survey proves that the lack of these trace elements can not only increase the formation of nitrosamines in food, but also cause esophageal epithelial keratinization and increase the incidence of cancer caused by nitrosamines. 1.Nutrition prevention 1）Eating more fresh vegetables and fruits: Fresh vegetables and fruits are rich in vitamins and minerals, especially vitamin C has antioxidant effect, which can block the synthesis of nitrosamines and reduce the occurrence of esophageal cancer. Vegetables: cauliflower, radish, mustard, bitter greens, rape, carrot, loofah, lentil, leek, onion, ginger, garlic, eggplant, asparagus, bitter gourd, tomato, cucumber, celery, konjac, green onion, green garlic seedling, pumpkin, soybean sprout, etc. Fruits: figs, dates, kiwi, citrus, apricots, hawthorn, cinnamon, rhizome, lily, loquat, sour plum, lotus seeds, pecan nuts, etc. (2) prohibit eating too hot, coarse and hard, spicy and stimulating food: because these foods can easily stimulate and damage the esophagus, causing esophageal lesions and increasing the chance of cancer. (3) Prohibit smoking, alcohol, and do not eat moldy food: smoking, alcohol and moldy food may induce esophageal cancer, so you must stay away from them. 2.Select more of the following foods Seafood: shark, scallop, sardine, abalone, sea cucumber, kelp, seaweed, oyster, mussel, clam, turtle, turtle, crab, fish oil, fish skin, fish maw, etc. Information beautiful nutrition transport Food category: coarse flour, corn, millet, cereal, black rice, buckwheat noodles, barley, soybeans, mung beans, etc. Other categories: shiitake mushroom, mushroom, silver fungus, fungus, milk, yogurt, beef, cheese, poultry egg, animal liver, tea, vinegar, etc. In daily life, water is an indispensable medium for human metabolism. Therefore, prevention of cancer should also drink more water. 3.Nutritional therapy As the lesion is in the esophagus, it often occurs that swallowing is restricted or completely unable to eat. Therefore, patients with esophageal cancer often have malnutrition. Therefore, it is very important to provide patients with reasonable and scientific nutritional diet. (1) Nutritional conditioning before clinical treatment: Nutritional treatment should be given effectively while deciding to give chemotherapy or surgery to patients. If the patient cannot eat, parenteral nutrition can be used. If the patient is able to eat, a soft food or elemental diet can be given. The diet should include more vitamins and minerals, enough calories to meet the metabolic needs and improve the preoperative nutritional status. Commonly used nutritious diets include egg custard, fish soup, milk, soy milk, and also some soft foods that are easy to digest, such as noodles, rice porridge, etc. (2) Nutritional conditioning during the clinical treatment period and late treatment: If surgical treatment is required, intravenous nutritional infusion should be used. If radiotherapy or chemotherapy, it will cause local edema and often have difficulty in eating. At this time, liquid or semi-liquid food should be given or soft food without local irritation should be consumed. After the end of treatment, the diet formula can be adjusted according to the condition in time. Commonly used nutritious diet includes radish soup, horn soup, hanging noodle soup, gingko icing sugar porridge, and also more watermelon juice, lotus root juice, mung bean soup, cucumber juice, etc., which can prevent dry throat and cure unfavorable swallowing.