A swollen tooth root is usually a possible cause of laryngitis. Tooth root swelling is usually caused by diseases such as acute apical inflammation or pericoronitis, which may show symptoms of swollen and painful gums. Due to the proximity of the throat to the mouth, bacterial infections can easily spread the inflammation, leading to cause laryngitis. Patients can take drugs such as amoxicillin and metronidazole under the guidance of the doctor while treating oral diseases. Patients in daily life should pay attention to oral hygiene and cleaning after meals, should pay attention to the diet to light, easy to digest food, such as millet porridge, yam soup, etc., to avoid eating cold and spicy stimulating food, maintain a good state of mind, at the same time, patients in their daily lives should quit smoking and alcohol. It is recommended that patients should go to the hospital in time to take treatment after examination, and patients should do a good job of oral hygiene care in daily life.