Esophageal cancer is a kind of digestive tract malignant tumor, some people think of prevention only when they think they may have esophageal cancer, in fact, it may be too late at that time, when the symptoms of esophageal cancer appear, it is likely to be in the middle and late stage of esophageal cancer, so prevention of esophageal cancer should be done before it is too late. To prevent esophageal cancer, we have to start from the daily life and should do the following: 1. Protect the esophagus The esophagus is the organ through which all the food is eaten. To chew and swallow slowly. Saliva is secreted by three kinds of glands, and after fully mixed with food, it can promote digestion, hydrolyze starch or maltose, etc.; dilute and dissolve food, enhance taste; mucin can lubricate food and facilitate swallowing; neutralize toxic substances and sterilize. Wolf swallowing. Do not eat food that is too hot, too hard and irritating. Otherwise the oral, esophageal and gastric mucosa will be damaged. Stimulating foods also include strong tea, strong coffee, strong alcohol, etc. Pay attention to oral hygiene. Any lesion in the mouth is not good for digestion, and if there is an infection, it can easily spread to the esophagus. 2.Reject carcinogenic food Nitrosamines are closely related to esophageal cancer, and molds can enhance the carcinogenic effect of nitrosamines. Overnight vegetables, rotten fruits, moldy grains, salted fish and pickles, and fried, fried and baked foods should be prohibited. Drinking water should pay attention to the water source, and tap water should be prevented from being contaminated, otherwise it can also cause cancer. Do not smoke. Smoking can cause a wide range of cancers, and the formation of cancer can cause cancers of the digestive, respiratory and urinary tracts. No alcohol abuse. It is inevitable to drink a lot of alcohol for a long time without consuming carcinogens. Some wine contains carcinogens such as nitrosamines and aflatoxins, and indirect carcinogens such as aldehydes and alcohols. 3.Rational nutrition Epidemiological survey confirms that malnutrition is related to esophageal cancer. Lack of protein will lead to mucosal hyperplasia of esophagus, which will easily become malignant; lack of fat will hinder the absorption of essential fatty acids and fat-soluble vitamins, which will affect health and lower immune function. We should eat more fresh vegetables and fruits, the former cannot replace the latter, because cooking often destroys a lot of vitamins and trace elements. To promote the drinking of tea. Green tea can prevent cancer and is beneficial to cardiovascular disease and so on. But do not advocate booze, it is best to “taste”, to a small number of effective drink in the body. When pregnancy, breastfeeding, fever, bleeding and gastrointestinal disease is not or caution when drinking. 4, active treatment of esophageal disease, esophagitis, white spots, polyps, diverticula, cardia failure, etc., due to histological changes, functional variation, local stimulation, easy to deteriorate into cancer. It must be closely observed, actively treated and effective measures taken for prevention.