There are mainly the following clinical diseases: 1. Chronic pharyngitis, where patients have lymphoid follicular hyperplasia in the posterior wall of the pharynx and the root of the tongue, which leads to a feeling of blockage in the pharynx, especially when the patient is drinking water. 2. Long throat, common diseases such as epiglottis cyst, laryngeal cancer and hypopharyngeal cancer. When patients swallow, the presence of swelling blocking the pharyngeal cavity, resulting in a more pronounced foreign body sensation in the pharynx. 3, reflux pharyngitis, due to gastric acid and other gastric contents reflux to the pharynx damage the mucous membrane of the pharynx, resulting in patients repeatedly have a foreign body sensation in the pharynx, phlegm and other related discomfort. Other diseases are that some patients are excluded from all other diseases through electronic laryngoscopy, electronic gastroscopy and other related examinations, but patients still feel very uncomfortable, this situation may be the patient’s mental state emotional changes, resulting in the patient’s throat blockage feeling.