Swallowing foreign body sensation in the left side of the throat, this is mainly seen in the following diseases: 1, chronic pharyngitis, patients with chronic pharyngitis, due to lymphatic follicle hyperplasia in the back wall of the pharynx, lymphatic follicle hyperplasia at the root of the tongue, dark red congestion in the throat, may appear foreign body sensation in the throat; 2, swelling of the tonsils, if the patient’s left tonsil long papilloma or polyps, cysts, it is possible that when swallowing, there will be a significant If the patient has a history of foreign bodies, such as fish spikes or bones stuck in the left side of the throat, there will be discomfort. In conclusion, for patients complaining of discomfort in the left side of the throat, it is recommended that patients go to the ENT department for routine examination, check indirect laryngoscopy first, and then do electronic laryngoscopy. Electronic laryngoscopy can examine the entire oropharynx and hypopharynx in great detail to find out if there are any other possible pathologies.