The most common causes of right-sided sore throat are acute tonsillitis, chronic tonsillitis, stenosis overgrowth syndrome, pharyngeal malignant tumors and other possibilities. 1. Acute tonsillitis: If the course of the disease is short, the right side of the sore throat may be caused by acute tonsillitis, mostly related to viral or bacterial infections, there is a unilateral onset of the possibility of a serious condition may be induced by suppurative tonsillitis or periannual abscess, need to combine with the blood test and other tests to actively anti-infective, symptomatic treatment. 2. The right side of the sore throat, if the duration of the disease is longer, may be related to chronic tonsillitis, stem overgrowth syndrome, pharyngeal malignant tumors and so on. (1) Chronic tonsillitis: most of the acute tonsillitis is not effectively controlled, the condition is caused by the delay. For the recurrence of the disease, drug conservative treatment is ineffective need to consider surgical treatment. (2) Prolonged cavernous syndrome: it is not rare in clinic, but it is easy to be missed and misdiagnosed. Due to the long cavernous process stimulates the blood vessels, nerves, and muscles in the neck, which leads to discomfort such as foreign body sensation and pain in the pharynx. If it is the right side of the cavernous process that is too long, then it will cause the right side of the throat to have pain in swallowing, which needs to be combined with CT examination to clarify, and if necessary, surgery is needed to treat it. (3) Malignant tumor of pharynx occurs in middle-aged and old men, most of them have long-term smoking and drinking and other bad habits. Tumor lesions may occur on the right side, so the right side of the swallowing pain. After clear diagnosis, surgery is needed, or postoperative adjuvant radiotherapy treatment. If the right side of the throat swallowing pain symptoms, it is recommended to go to the hospital in time, clear cause targeted treatment.