There is no clinical term for the first day of tonsillitis that is serious. The period when tonsillitis is more severe is related to the individual patient’s constitution and the presence or absence of active treatment. In general, the symptoms are more severe on the second to fifth day, with a high fever of 39-40°C, as well as vomiting and lethargy. In the initial stage of tonsillitis, it may manifest only as throat discomfort. As the disease progresses, the inflammation gradually worsens, and fever, throat pain, and in severe cases, infection around the tonsils, swallowing and breathing difficulties may occur. For patients who only present with pharyngeal discomfort, they can be cured by autoimmunity without medication; for patients who present with other symptoms, the infection factor needs to be clarified by blood sampling. For bacterial infections, broad-spectrum antibiotics such as penicillin and cephalosporin can be used for treatment; for viral infections, antiviral drugs such as busulfan and diflucan can be used for treatment, and patients with cough and sputum need to be treated symptomatically with local nebulization and cough syrup. When the tonsils are inflamed, it is important to pay attention to opening windows regularly to keep the air fresh. When the air is dry, you can keep the air at a certain humidity level by using a humidifier, eating lightly and drinking more warm water to reduce the stimulation of the pharynx. Patients in the febrile period will sweat a lot when their fever is reduced, so they need to change their underwear in time. Tonsillitis is contagious, so it is recommended to disinfect the patient’s used clothes, dishes and other household items to avoid infecting others.