Eating boiling hot food for a long time is very harmful to the esophagus and may induce esophageal cancer, so the temperature in daily diet should not be too high. How to prevent esophageal cancer? To prevent it, you need to know the early symptoms of esophageal cancer, so that you can pay more attention to prevent esophageal cancer from coming to you. When you are eating, food passes through slowly and there is a feeling of staying, you should pay attention to it. 2.Sense of dryness and urgency in the throat Often, you feel that you can’t swallow food smoothly, and there is a slight pain, dryness and heat, especially when you swallow rough food. 3, foreign body feeling in the esophagus There are such similar as rice grains or vegetable fragments attached to the esophagus, resulting in swallowing, even if there is no painful feeling is not related to eating, even if there is no swallowing action, but still feel the presence of foreign body feeling. 4.There is a feeling of stuffiness behind the sternum, and you can only vaguely feel discomfort in the chest, but you can neither point out the location of the discomfort nor describe the details of the discomfort. 5.Pain behind the sternum Sternal pain is a symptom that mostly occurs in early stage esophageal cancer patients, which often manifests as a slight pain in the sternum when swallowing food, and can feel the painful area, and the nature of the pain can be as pinprick-like pain. 6.Choking sensation when swallowing food In the early stage of esophageal cancer, because the lesion is often manifested as small patchy lesions such as localized small esophageal mucosa congestion, swelling, erosion, etc., when food is passed, there will be the discomfort of swallowing or the sensation of unpleasant swallowing.