Foreign body sensation in the pharynx may be caused by chronic pharyngitis, pharyngeal allodynia, and penile syndrome, etc. Chronic pharyngitis is a chronic inflammation of the mucous membrane of the pharynx. 1. Chronic pharyngitis: it is a chronic inflammation of the pharyngeal mucosa, mostly caused by bad habits such as excessive smoking and drinking, and nasopharyngeal diseases, manifested as foreign body sensation in the pharynx, burning sensation, itching, dryness, and slight pain, which can be accompanied by coughing, phlegm, nausea and other discomforts. 2. Pharyngeal heterosensory disorder: after excluding the organic lesions that cause pharyngeal foreign body sensation, patients have abnormal pharyngeal sensations, such as obstruction, burning sensation, itching sensation, ants sensation, etc., which are often accompanied by anxiety, impatience and nervousness. 3. Stromal Syndrome: It is caused by excessive length and abnormal shape of the stroma, which manifests as a foreign body sensation in the pharynx, accompanied by sore throat, head and neck pain, reflex earache and other symptoms, and the pain is aggravated when the neck rotates or when swallowing. The presence of pharyngeal foreign body sensation, should go to the hospital, under the guidance of the doctor to clarify the cause.