Throat pain against the right side may be cancer, such as laryngeal cancer, but it may also be caused by laryngitis, tonsillitis, laryngeal tuberculosis and other diseases. 1. Laryngeal cancer: it belongs to malignant tumor, the cause of which is not clear yet, and may be related to abnormal sex hormone level, viral infection, heredity and other factors. When cancer appears on the right side of the throat, it can be manifested as pain on the right side of the throat, and it is easy to be accompanied by hoarseness, foreign body sensation in the throat, cough, difficulty in swallowing and other uncomfortable symptoms. 2. Laryngitis: the disease is related to infection, trauma, inhalation of harmful gases, excessive use of voice and other factors. Typical symptoms include sore throat, hoarseness, cough, sputum, dyspnea, etc. It can also be manifested as pain on the right side of the throat. 3. Tonsillitis: mainly related to infection, immunity decline, etc., the disease often causes patients to appear chills, fever, throat pain and discomfort, and even swallowing difficulties, dyspnea and other symptoms. For some tonsillitis patients, it can be manifested as a pain in the right side of the throat. 4. Laryngeal tuberculosis: laryngeal tuberculosis is mainly related to laryngeal infection with Mycobacterium tuberculosis, mostly secondary to pulmonary tuberculosis, and a few patients are caused by direct infection. Typical symptoms of patients include hoarseness, sore throat, cough, low-grade fever, night sweats, etc., which can also be manifested as pain on the right side of the throat. The pain on the right side of the throat may also be related to laryngeal foreign body, diphtheria, laryngeal papilloma, pharyngitis, etc. It is recommended that the patient consult a doctor for examination in time to clarify whether it is caused by cancer.