The main symptom of esophageal cancer is dysphagia, and the degree of dysphagia is related to the stage of the disease, as follows: 1. early stage: esophageal stricture is relatively light, solid food can be eaten, and there is a feeling of choking and blockage behind the sternum when eating; 2. late stage: the scope of the disease expands, the stiffness of the esophageal wall and the narrowing of the esophageal lumen, and the typical symptom of dysphagia appears, and serious patients can have difficulty in entering water, nausea and vomiting after eating. The symptoms of esophageal obstruction are caused by the narrowing of the esophageal lumen due to esophageal cancer. If you find choking sensation, dysphagia and retrosternal tingling pain, you should go to the hospital in time.