The onset of the disease is sudden, epiglottis is red, swollen and thickened, especially on the tongue surface, which can be spherical in severe cases. If an abscess is formed, yellow and white pus spots can be seen on the epiglottis tongue surface. Consciously severe pain in the pharynx, aggravated when swallowing, dysphagia, choking in drinking water, even dysphagia, drooling, slurred speech, something in the mouth, swelling and tenderness of lymph nodes on one or both sides of the neck, and redness and swelling of the anterior skin of the neck. The whole body can see aversion to cold and fever, headache and cough, and general malaise. Severe cases can be seen chills and high fever, inspiratory throat or inspiratory dyspnea.