At present, the commonly used methods for esophageal examination include barium meal, gastroscopy and chest CT, etc. The appropriate examination method should be chosen according to the condition. 1. Barium digestive meal: It is a common examination method for digestive diseases, mainly through oral intake of barium, and then through X-ray to observe the passage of barium in the whole digestive tract. Barium can be adhered to the inner wall of the esophagus, so as to show the complete condition of the esophagus, and it can be used for the preliminary diagnosis of esophageal diverticulum, ulcer, tumor, etc. Gastroscopy: It can directly observe the mucous membrane of the esophagus clearly, and it is necessary to choose the appropriate examination method according to the condition. 2. Gastroscopy: It can directly observe the esophageal mucosa and see whether there is any lesion in the esophagus. If there is any suspected mucosal bulge or ulcerative lesion, it can be extracted directly for biopsy, and if there is any esophageal varices, it is feasible to treat it under endoscopy. 3. Chest CT: It can assist in the diagnosis of esophageal space-occupying diseases and further clarify the level of infiltration, the presence of lymph nodes and distant metastases; it can also be used to help determine the location of esophageal foreign bodies. In addition, other examination methods such as esophageal manometry, which is mainly used to understand the dynamic functional status of the esophagus, as well as the pressure and relaxation frequency of the lower esophageal sphincter, are used to diagnose gastroesophageal reflux disease and pancreatic achalasia. If the esophagus appears uncomfortable symptoms, should go to the regular hospital in time, by the doctor to clarify the cause of the disease, to carry out targeted treatment, so as not to delay the condition.