Foreign body sensation in the throat from gagging is often seen in acute pharyngitis, acute epiglottitis, chronic pharyngitis, tumors and so on. 1. Acute pharyngitis: it may be caused by viral or bacterial infection, or it may be caused by smoke or dust irritation, which often leads to sore throat, hoarseness, and foreign body sensation in the throat. 2. Acute epiglottitis: it is an acute inflammatory lesion occurring in the epiglottis area and the surrounding tissues, which often leads to severe pain in the throat and is accompanied by symptoms such as foreign body sensation when swallowing and painful swallowing. 3. Chronic pharyngitis: most of the acute pharyngitis repeated episodes or delayed treatment and the transformation of the formation, but also may be due to other reasons, often lead to dryness in the throat, foreign body sensation. 4. Tumor: Tumor in the upper part of the pharynx or esophagus, including benign tumors and malignant tumors, with the gradual increase of the tumor, may cause obvious foreign body sensation. Foreign body sensation in throat may also be caused by other reasons, it is recommended to go to the hospital in time to find out the reason for targeted treatment.