Rigid esophagoscopes are mostly harmless, but may cause varying degrees of nausea and discomfort. Rigid esophagoscopy is mostly used to remove some irregularly shaped or sharp-edged foreign objects embedded in the esophagus, because rigid esophagoscopes have a metallic coat, which can wrap the foreign object in the process of removing the foreign object, avoiding re-injury to the esophagus or oropharynx due to the sliding of the foreign object, and thus ensuring the smooth removal of the foreign object. There are some situations where rigid esophagoscopy is not recommended to avoid unnecessary damage, such as during the acute phase of corrosive esophageal burns, those with difficulty opening their mouths, those at risk of bleeding, and those with severe cardiovascular disease. Before performing rigid esophagoscopy, a professional physician will evaluate the situation and allow the patient to undergo rigid esophagoscopy, which is generally non-hazardous and can be safely performed.