Painful swallowing on the right side of the throat is less likely to be laryngeal cancer, and is mostly considered to be caused by inflammation of the throat. The most common diseases that cause painful swallowing on the right side of throat include acute pharyngitis, tonsillitis and acute epiglottitis. Acute pharyngitis, in addition to pain, is often accompanied by fever, and swelling of the pharynx can be seen on examination; in the case of tonsillitis, purulent secretions can be attached to its surface; and acute epiglottitis pain is more pronounced, and the patient can be accompanied by symptoms such as dyspnea. In addition, if the patient’s pharynx is cancerous, it mainly manifests as hoarseness and foreign body sensation in the pharynx, which can also cause pain. At the same time, less common diseases, such as cavernous cavernous and glossopharyngeal neuralgia, can also cause pain on one side of the throat. Therefore, when a patient has symptoms of swallowing pain on the right side of the throat that do not resolve for a long time, it is recommended to go to the hospital to clarify the cause of the disease for treatment.