Small bumps on the back wall of the throat may be caused by hypertrophic pharyngitis, chronic tonsillitis, papilloma and other diseases. 1. Hypertrophic pharyngitis: the basic causes of this disease include acute pharyngitis, pharyngeal reflux, chronic inflammation of neighboring organs, etc. It is often induced by smoking, alcoholism, open-mouth breathing, excessive use of the voice, etc., which leads to granular bumps on the posterior wall of the pharynx of the patient, mostly accompanied by a slight pain, burning sensation, irritating cough and other symptoms. 2. Chronic tonsillitis: the occurrence of this disease is mainly due to the recurrence of acute tonsillitis, which can be induced by overwork, physical weakness, noxious gas stimulation and other factors, because the secretion of the patient’s crypt mouth will stimulate the pharyngeal mucous membrane, leading to pharyngeal follicular hyperplasia, so there will be small bumps on the wall at the back of the throat, and it can be accompanied by pharyngeal pain, dysphagia and other symptoms. 3. Papilloma: this disease is mainly caused by the infection of human papilloma virus, which may be related to viral infection, inflammation stimulation, environment and other factors. The patient’s lesion site will appear abnormal lumps, so there are small bumps on the back wall of the throat, mostly accompanied by dry and itchy throat, can also occur in the nasal cavity, external ear canal and other places. The causes of the lumps at the back of the throat are many, and it is necessary to go to the hospital to improve the relevant examination to clarify the specific causes.