If the throat hurts when swallowing saliva, inflammation is more likely. The following diseases are common: 1. Acute tonsillitis and acute pharyngitis, which manifest as painful sensation in the oropharynx when swallowing saliva. It is necessary to apply antibiotics and symptomatic treatment. 2. Herpes infection of the throat, common in children, can be seen in the clinical examination of herpes infection of the throat, generally need to carry out antiviral and other comprehensive treatment. 3. Some patients have acute epiglottitis, when swallowing saliva, manifested as a painful sensation in the laryngeal node position of the throat. Some patients have advanced cancer of the larynx, and when the main body of the cancer breaks down, painful sensation when swallowing saliva can occur. This kind of pain has no effect with medication and needs to be treated with surgery or radiotherapy or chemotherapy.