A lump under the throat is often seen in benign tumors of the pharynx, epiglottis cysts, laryngeal cancer and so on. 1. Benign tumors of the throat: for example, papilloma of the throat is a relatively common benign tumor, the cause is not clear, may be related to human papilloma virus infection, the tumor is usually no obvious symptoms, when the tumor is bigger, there may be swallowing difficulties, laryngeal foreign body sensation. Benign tumors also include polyps and hemangiomas. 2. Epiglottis cyst: If it is congenital, it may be caused by developmental abnormality that leads to the formation of cystic swelling on the epiglottis. In addition, it can also be seen in acquired factors, such as inflammation in the epiglottis, which leads to the increase of secretion of glands, which can not be discharged in time and can also form cystic swelling. 3. Laryngeal cancer: it may be caused by smoking, long-term alcohol consumption, sex hormones, etc. Abnormal proliferation of cells in the larynx will also lead to lumps under the throat. It is recommended to consult the hospital for a clear diagnosis and take targeted treatment or therapy after the lump grows under the throat.