The causes of tonsil pain include acute tonsillitis, fanshuang pharyngitis, malignant tumor of tonsil, and glossopharyngeal neuralgia. 1. Acute tonsillitis: mostly caused by streptococcal infection, there will be bilateral tonsil enlargement and pain, and the pain increases during swallowing. 2. Fanshuang pharyngitis: mostly due to spirochete and clostridium difficile infections, mostly manifested as unilateral enlarged and painful tonsils, with the surface covered by thicker dirty pseudomembrane and grayish color. Often with sore throat, fever, dysphagia and other symptoms. 3. Malignant tumor of tonsil: mostly manifested as unilateral enlarged tonsil, accompanied by ulcers. 4. Hypopharyngeal neuralgia: manifested as unilateral tonsil paroxysmal pinprick pain. Tonsil pain symptoms, need to go to the hospital in time for examination, identify the cause of the disease, targeted treatment.