Inflammation of the tonsils not only brings discomfort to the body, but also affects normal school work. Usually, tonsillitis is caused by low immunity, inflammation of neighboring organs, and invasion of bacteria and viruses. 1, resistance is too low: if the body recently long-term fatigue, lack of exercise, lack of nutrition will lead to low resistance, when there are some viruses, bacteria into the tonsils will lead to inflammation of the tonsils. 2. Inflammation of neighboring organ tissues: It is common to have diseases in the throat, or in the ear and nose, and the inflammation slowly spreads to the tonsils, resulting in tonsillitis, causing pain, redness, swelling, cough and low fever. 3. Bacterial and viral invasion: It is the main cause of tonsillitis, and the common causative bacteria is streptococcus. Patients will experience redness, swelling and pain. 4. Seasonal factors: Whenever there is a change of season, or when there are ups and downs in temperature, the immunity of the body will change, which can easily lead to tonsillitis. 5, systemic diseases: If the patient suffers from pneumonia, bronchitis, bronchitis and other acute and chronic inflammatory diseases also easily lead to inflammation of the tonsils of the body. Usually tonsillitis is caused by the above-mentioned reasons, it is recommended to take the appropriate treatment plan according to the cause in time.