Swelling and pain in the upper part of the throat, generally refers to the swelling and pain in the palate, the common causes are acute tonsillitis, acute pharyngitis, acute laryngitis and so on. 1. Acute tonsillitis: when the tonsils are inflamed, the swelling and pain in the upper part of the throat is caused by the inflammatory stimulation of the local mucosa. 2. Acute pharyngitis: viral or bacterial infection causes acute inflammation of the pharynx, resulting in congestion and edema of the pharyngeal mucosa, followed by swelling and pain in the upper part of the throat. 3. Acute laryngitis: acute inflammation of the mucous membrane of the larynx caused by excessive use of voice or infection, congestion and edema in the larynx, followed by swelling and pain in the upper part of the throat. There may be other reasons for the swelling and pain in the upper part of the throat, it is recommended to go to the hospital in time, under the guidance of the doctor to carry out standardized treatment, to avoid delaying the condition.