The difference between pharyngitis foreign body sensation and esophageal cancer foreign body sensation is that pharyngitis is usually the obstruction sensation of empty pharynx, and esophageal cancer is the obstruction sensation of progressive aggravation. 1. Foreign body sensation of pharyngitis: foreign body sensation of pharyngitis usually shows the obstruction feeling of empty pharynx, that is to say, it is more obvious when it is quiet, there is no foreign body sensation when eating, and the symptom will disappear or reduce, and then the symptom will appear again after eating. 2. Foreign body sensation of esophageal cancer: foreign body sensation of esophageal cancer patients can be manifested as progressive aggravation of obstruction sensation, which will appear when swallowing during eating, and accompanied by pain behind the sternum, stuffiness and discomfort. It is suggested that patients with foreign body sensation in throat should go to hospital for examination and treatment in time to avoid delaying the condition and causing adverse consequences.