Esophageal cancer is closely related to diet. 3.Lack of certain nutrients, vitamins and trace elements due to insufficient intake of beans, vegetables and fruits for a long time; 4.Like hot and scalding food, or food that is too dry, hard and rough. How to detect esophageal cancer in early stage? Most patients with early stage esophageal cancer have different degrees of self-perceived symptoms, and must pay attention to the following conditions if they are found. 1. Choking sensation: When eating, especially when eating dry food, it feels like the food stays somewhere in the esophagus for a short time; sometimes it feels like there is incomplete food in the esophagus, so the patient likes to do swallowing action. This choking sensation can be cured without treatment, but it tends to recur after a few days or weeks. 2. Foreign body sensation in the esophagus: It often feels like something is attached to the wall of the esophagus and cannot be swallowed. This foreign body sensation is different from choking sensation, as foreign body sensation is not related to eating, while choking sensation appears when eating. 3. There is a slight discomfort or pain behind the sternum when eating. This pain is relatively brief, sometimes lasting only a few seconds. When eating coarse, hot and irritating food, the pain is aggravated or lengthens in duration. 4. Frequent belching when swallowing and a feeling of fullness in the upper abdomen. This symptom mostly occurs in lower esophageal cancer, especially when the cancer reaches the cardia. If some of the above symptoms occur in different degrees, it is necessary to be alert and it is better to go to hospital for barium esophageal fluoroscopy or esophagoscopy.