Common causes of foreign body sensation on the right side of the throat include foreign body in the throat, epiglottis cyst, hypopharyngeal cancer, etc. Different causes are treated differently, and it is recommended to consult a doctor in time, and common treatments include removing the foreign body, surgical treatment, radiotherapy and chemotherapy. 1. Foreign body in throat: If you have the experience of eating fish or melon seeds, it is possible that the fish splinter or melon seeds skin may pierce into the mucous membrane of the right side of the pharynx, resulting in a foreign body sensation, and the sensation will disappear after removing the foreign body in the hospital. 2. Epiglottis cyst: a cystic swelling formed by mucus retention due to obstruction of the mucous gland ducts of the epiglottis. It occurs in the right side of epiglottis, and when the cyst is large, there will be foreign body sensation in the right side of throat. Generally, laryngoscopy is performed to remove the epiglottis cyst. 3. Hypopharyngeal carcinoma: right side hypopharyngeal carcinoma will have foreign body sensation on the right side of throat, and the comprehensive treatment mode of surgery plus radiotherapy and chemotherapy is the best choice at present. Thorough resection of tumor is the key to improve the curative effect. Surgery can be divided into tumor resection with preserving laryngeal function, tumor resection without preserving laryngeal function, and combined with radiotherapy and chemotherapy after surgery, the prognosis is relatively good. If there is a foreign body sensation on the right side of the throat, it is recommended to consult a doctor in time and take targeted treatment after diagnosis.