Esophageal cancer is a common malignant tumor in human digestive tract. About 300,000 people die of esophageal cancer worldwide every year, while China accounts for more than half of them, and is the country with the highest incidence and death rate of esophageal cancer in the world. The tumor registry data of Jiangsu Province shows that the incidence rate of esophageal cancer among residents is 42.14/100,000 and the mortality rate is 31.78/100,000, with men being higher than women. Research shows that the occurrence of esophageal cancer is not only influenced by genetic factors, but also closely related to dietary habits. Love of pickled foods containing amine nitrite compounds, lack of vitamins (such as vitamin B2, etc.) and trace elements (such as zinc and selenium, etc.) in the diet, addiction to tobacco and alcohol, and eating too hot and too fast are all risk factors for the occurrence of esophageal cancer. However, the mucous membrane of esophagus is very fragile, so drinking boiling water and eating overheated food will burn the mucous membrane of esophagus and eventually cause cancer. Early detection and treatment of tumor is very important for prognosis, and it is better to nip them in the bud. Therefore, you should be alert to the occurrence of esophageal cancer when the following symptoms appear: 1. Discomfort when swallowing food, food stagnation or choking. In the early stage, this symptom is not obvious and extremely mild, so it is easy to be ignored. If it occurs repeatedly and gets worse gradually, it should be taken seriously. 2. Painful sensation when swallowing. When eating, it feels pain behind the sternum. Besides being good at detecting the symptoms of bad health, good living habits are the only way to keep away from esophageal cancer. Eat more fresh vegetables and fruits, stay away from pickled, smoked and barbecued foods, quit smoking and limit alcohol. Don’t eat too hot food and drinks, and drink tea and soup after they have cooled down a little; 3. Chew and swallow slowly; 4.