There is no such thing as the fastest way to treat tonsillitis in three year old babies. Tonsillitis in three year old babies is usually caused by bacterial infections and can be treated by general treatment, medication and surgery. 1. General treatment: usually pay attention to oral hygiene, eat less junk food so that the chance of infection will be less. After the inflammation of the baby tonsils, you should pay attention to rest, eat liquid food, drink more water, strengthen nutrition, dredge the stool, so as to relieve the symptoms. 2. Medication: Tonsillitis caused by bacterial infection can take antibiotic anti-inflammatory treatment, such as oral amoxicillin capsules, cefixime granules and other drugs. 3. Surgery: If the baby repeatedly suffers from acute tonsillitis with complications, tonsillectomy can be performed two weeks after the acute inflammation subsides. It is recommended to go to the hospital in time, the specific drugs need to be used under the guidance of the doctor.